Polyurethane foaming metering pump quick-change structure

Abstract

The utility model relates to the technical field of metering pump provides polyurethane foaming metering pump quick change structure, including mounting seat, the top of mounting seat is provided with the pump body, the middle position of pump body bottom end is fixed with the output shaft, the edge position of pump body bottom end is fixed with the quick -mount structure, the edge position department of mounting seat top is fixed with the protection structure, the middle position department of mounting seat inside is fixed with the positioning guide structure, the positioning guide structure includes the positioning pipe, guide pipe and protection ring, the positioning pipe is fixed in the middle position of mounting seat inside. The utility model discloses positioning guide structure is set up, and guide pipe is in the shape of ladder, can form the conical guide surface with the semicircular structure of protection ring, and the output shaft is inserted into the positioning pipe quickly, prevents the installation misplacement, realizes the device to have the function of self -guiding installation, improves the convenience and applicability of this polyurethane foaming metering pump quick change structure when using.

Description

Technical Field

[0001] This utility model relates to the field of quick-change metering pump technology, and in particular to a quick-change structure for polyurethane foam metering pumps. Background Technology

[0002] Traditional metering pumps are bolted in place, requiring recalibration during replacement, which is time-consuming. With the increasing demand for small-batch, multi-variety production in industries such as automotive and construction, frequent pump replacements have become a bottleneck. Quick-change technology can shorten replacement time to within 5 minutes, while simultaneously solving the problems of alignment accuracy and sealing reliability. Therefore, a quick-change structure for polyurethane foam metering pumps needs to be designed.

[0003] To address this issue, patent CN222162912U discloses a metering pump with a quick-release structure, comprising a pump body, a fixed plate fixedly connected to the outer wall of the pump body, a worktable provided on the lower surface of the fixed plate, a fixed ring fixedly connected inside the fixed plate, a threaded ring rotatably connected inside the fixed ring, a sliding sleeve rotatably connected to the outer wall of the threaded ring, a knob fixedly connected to one end of the threaded ring, a movable ring threadedly connected to the outer wall of the threaded ring, and a connecting seat fixedly connected to the outer wall of the movable ring. In this invention, rotating the knob causes the movable ring to slide against the outer wall of the threaded ring, thereby causing the first movable frame to pull the second movable frame, allowing the second movable frame to retract and be pulled out from the worktable. This solves the problem that most existing metering pumps are fixed with bolts, making it inconvenient to assemble and disassemble the metering pump as a whole.

[0004] Although the metering pump with quick-release structure mentioned above can be quickly assembled and disassembled, it is inconvenient to guide alignment during assembly. The pump body is easily damaged by bumps during alignment. Therefore, it is necessary to design a quick-change structure for polyurethane foam metering pumps. Utility Model Content

[0005] The purpose of this invention is to provide a quick-change structure for polyurethane foam metering pumps, which solves the problem that existing quick-change structures for metering pumps are inconvenient to align during assembly and are prone to damage to the pump body due to bumps during alignment.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a quick-change structure for a polyurethane foam metering pump, including a mounting base;

[0007] A pump body is provided above the mounting base, an output shaft is fixed at the middle position of the bottom end of the pump body, and a quick-install structure is fixed at the edge position of the bottom end of the pump body.

[0008] A protective structure is fixed at the edge of the top of the mounting base;

[0009] A positioning guide structure is fixed at the middle position inside the mounting base. The positioning guide structure includes a positioning tube, a guide tube, and a protective ring. The positioning tube is fixed at the middle position inside the mounting base, the top end of the positioning tube is fixed with a guide tube, and the top end of the guide tube is fixed with a protective ring.

[0010] Furthermore, the quick-connect structure includes a connecting bolt, a connecting disc, and a sealing ring. The connecting disc is fixed to the edge of the bottom end of the pump body. The connecting bolt is evenly distributed throughout the interior of the connecting disc. A sealing ring is fixed to the inner edge of the bottom of the connecting disc.

[0011] Furthermore, the connecting bolts are evenly distributed inside the connecting disc, and the bottom ends of the connecting bolts all extend into the interior of the mounting base and are threadedly connected to the mounting base.

[0012] Furthermore, the protective structure includes an adhesive layer, a noise reduction layer, and a buffer layer. The adhesive layer is fixed to the edge of the top of the mounting base, the top of the adhesive layer is fixed to the noise reduction layer, and the top of the noise reduction layer is fixed to the buffer layer.

[0013] Furthermore, the noise reduction layer is an open-cell polyurethane foam layer, and the buffer layer is a rubber layer.

[0014] Furthermore, the central axis of the positioning tube and the central axis of the output shaft are collinear, and the top view cross-sectional area of ​​the guide tube is larger than the bottom view cross-sectional area of ​​the guide tube.

[0015] Furthermore, the main view section of the protective ring is semi-circular.

[0016] The advantages of the quick-change structure for the polyurethane foam metering pump provided by this utility model are as follows:

[0017] By setting a positioning guide structure, the guide tube is stepped and can form a conical guide surface with the semi-circular structure of the protective ring, which quickly guides the output shaft to be inserted into the positioning tube, preventing misalignment during installation. This realizes that the device has the function of self-guided installation, and improves the convenience and applicability of the quick-change structure of the polyurethane foam metering pump during use.

[0018] By incorporating a quick-installation structure, the mounting base and pump body are quickly fixed by connecting bolts and equally spaced connecting discs. The sealing ring has a certain degree of elasticity, which can prevent the threads from loosening due to vibration while sealing, ensuring the sealing reliability under high pressure conditions. This makes the device easy to install quickly and improves the convenience of using the quick-change structure of the polyurethane foam metering pump.

[0019] By incorporating a protective structure, including a noise reduction layer made of open-cell polyurethane foam that absorbs high-frequency vibrations and a buffer layer made of rubber that suppresses low-frequency noise, the device achieves both noise reduction and buffering capabilities, thus enhancing its applicability in use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0022] Figure 3 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model;

[0023] Figure 4 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention;

[0024] Figure 5 This is a top-view cross-sectional three-dimensional structural diagram of the present invention.

[0025] The reference numerals in the figure are as follows: 1. Mounting base; 2. Pump body; 3. Quick-release structure; 31. Connecting bolt; 32. Connecting disc; 33. Sealing ring; 4. Protective structure; 41. Adhesive layer; 42. Noise reduction layer; 43. Buffer layer; 5. Output shaft; 6. Positioning guide structure; 61. Positioning tube; 62. Guide tube; 63. Protective ring. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-5 The quick-change structure for the polyurethane foam metering pump provided by this utility model includes a mounting base 1.

[0028] Reference Figures 1-5A pump body 2 is provided above the mounting base 1. An output shaft 5 is fixed at the middle position of the bottom end of the pump body 2. A quick-connect structure 3 is fixed at the edge of the bottom end of the pump body 2. The quick-connect structure 3 includes a connecting bolt 31, a connecting plate 32 and a sealing ring 33. The connecting plate 32 is fixed at the edge of the bottom end of the pump body 2. The connecting bolts 31 are evenly distributed inside the connecting plate 32. The sealing ring 33 is fixed at the inner edge of the bottom of the connecting plate 32. The connecting bolts 31 are evenly distributed inside the connecting plate 32. The bottom ends of the connecting bolts 31 all extend into the interior of the mounting base 1 and are threadedly connected to the mounting base 1.

[0029] Press down the pump body 2 so that the threaded end of the connecting bolt 31 is aligned with the threaded hole of the mounting base 1. Rotate the connecting bolt 31 so that the bottom end of the connecting bolt 31 enters the interior of the mounting base 1 to form a rigid connection. The sealing ring 33 blocks the installation gap, which facilitates sealing.

[0030] Reference Figures 1-4 A protective structure 4 is fixed at the edge of the top of the mounting base 1. The protective structure 4 includes an adhesive layer 41, a noise reduction layer 42, and a buffer layer 43. The adhesive layer 41 is fixed at the edge of the top of the mounting base 1. The top of the adhesive layer 41 is fixed with the noise reduction layer 42. The top of the noise reduction layer 42 is fixed with the buffer layer 43. The noise reduction layer 42 is an open-cell polyurethane foam layer, and the buffer layer 43 is a rubber layer.

[0031] The noise reduction layer 42 is an open-cell polyurethane foam layer that can absorb high-frequency vibrations. The buffer layer 43 is a rubber layer that can suppress low-frequency noise and reduce vibration transmission during pump body 2 operation. At the same time, the elastic deformation of the buffer layer 43 can absorb the vibration energy of pump body 2 operation, thus having a certain buffering effect.

[0032] Reference Figures 2-5 A positioning guide structure 6 is fixed in the middle position inside the mounting base 1. The positioning guide structure 6 includes a positioning tube 61, a guide tube 62 and a protective ring 63. The positioning tube 61 is fixed in the middle position inside the mounting base 1. The guide tube 62 is fixed at the top of the positioning tube 61. The protective ring 63 is fixed at the top of the guide tube 62. The central axis of the positioning tube 61 and the central axis of the output shaft 5 are collinear. The top view cross-sectional area of ​​the guide tube 62 is larger than the bottom view cross-sectional area of ​​the guide tube 62. The main view cross-section of the protective ring 63 is semi-circular.

[0033] During installation, the output shaft 5 slides along the hemispherical surface of the protective ring 63 into the flared part of the guide tube 62. The position is automatically corrected by the cross-sectional difference, and finally forms a tight fit with the positioning tube 61, so that the central axis of the positioning tube 61 and the central axis of the output shaft 5 are collinear, which can quickly align them and facilitate rapid installation.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick-change structure for a polyurethane foam metering pump, including a mounting base (1); Its features are: A pump body (2) is provided above the mounting base (1), an output shaft (5) is fixed at the middle position of the bottom end of the pump body (2), and a quick-install structure (3) is fixed at the edge position of the bottom end of the pump body (2). A protective structure (4) is fixed at the edge of the top of the mounting base (1); A positioning guide structure (6) is fixed in the middle position inside the mounting base (1). The positioning guide structure (6) includes a positioning tube (61), a guide tube (62) and a protective ring (63). The positioning tube (61) is fixed in the middle position inside the mounting base (1). The top end of the positioning tube (61) is fixed with a guide tube (62), and the top end of the guide tube (62) is fixed with a protective ring (63).

2. The quick-change structure of the polyurethane foam metering pump according to claim 1, characterized in that: The quick-install structure (3) includes a connecting bolt (31), a connecting disc (32) and a sealing ring (33). The connecting disc (32) is fixed to the edge of the bottom of the pump body (2). The connecting bolt (31) is evenly penetrated inside the connecting disc (32). The sealing ring (33) is fixed to the inner edge of the bottom of the connecting disc (32).

3. The quick-change structure of the polyurethane foam metering pump according to claim 2, characterized in that: The connecting bolts (31) are evenly distributed inside the connecting plate (32), and the bottom ends of the connecting bolts (31) extend into the interior of the mounting base (1) and are threadedly connected to the mounting base (1).

4. The quick-change structure of the polyurethane foam metering pump according to claim 1, characterized in that: The protective structure (4) includes an adhesive layer (41), a noise reduction layer (42) and a buffer layer (43). The adhesive layer (41) is fixed to the edge of the top of the mounting base (1). The top of the adhesive layer (41) is fixed with the noise reduction layer (42), and the top of the noise reduction layer (42) is fixed with the buffer layer (43).

5. The quick-change structure of the polyurethane foam metering pump according to claim 4, characterized in that: The noise reduction layer (42) is an open-cell polyurethane foam layer, and the buffer layer (43) is a rubber layer.

6. The quick-change structure of the polyurethane foam metering pump according to claim 1, characterized in that: The central axis of the positioning tube (61) and the central axis of the output shaft (5) are collinear, and the top view cross-sectional area of ​​the guide tube (62) is greater than the bottom view cross-sectional area of ​​the guide tube (62).

7. The quick-change structure of the polyurethane foam metering pump according to claim 1, characterized in that: The front view section of the protective ring (63) is semi-circular.

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