Powder pump

Abstract

The utility model provides a powder pump which comprises a pump body, a first air delivery pipe and an air blowing mechanism, the air blowing mechanism is located in the pump body, the first air delivery pipe is connected to the pump body, a powder inlet channel and a powder outlet channel which are communicated with each other are arranged in the pump body, a first air delivery channel is arranged in the first air delivery pipe, and the first air delivery channel is communicated with the powder outlet channel. The first air conveying channel is communicated with the air blowing mechanism, the first air conveying channel is communicated with the powder outlet channel through the air blowing mechanism, when the first air conveying channel conveys air to the air blowing mechanism, the air blowing mechanism can blow air into the powder outlet channel, and an included angle is formed between the powder inlet channel and the powder outlet channel. The included angle is an obtuse angle. According to the powder pump, the included angle between the powder inlet channel and the powder outlet channel is set to be the obtuse angle, so that the included angle has a certain radian for transition, powder is prevented from vertically falling into the pump body and excessively abrading the pump body, friction between the powder and the pump body is reduced, and the service life of the powder pump is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of powder spraying, in particular to a powder pump. Background Art

[0002] Powder spraying is the process of spraying powder coating onto the surface of a workpiece using powder spraying equipment. Under the action of static electricity, the powder will be evenly adsorbed on the surface of the workpiece to form a powdery coating; the powdery coating is baked at high temperature to level and solidify, becoming a final coating with different effects.

[0003] In the currently available powder pumps, many of the powder inlet and outlet channels are arranged perpendicular to each other. For example, in a powder pump for spraying enamel powder disclosed in Chinese patent CN109395908A, it can be seen that the powder inlet interface and the pump body are in a perpendicular state to each other. In this case, when the powder enters the pump body, it will fall directly vertically into the pump body. However, due to the high hardness of the enamel powder itself, when the powder falls vertically, the friction between the powder and the pump body increases, and the impact force is relatively strong. Therefore, the wear on the inside of the pump body will also increase, which is easy to reduce the service life of the powder pump.

[0004] Therefore, it is necessary to improve the existing technology and provide a powder pump with less wear on the pump body. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a powder pump which has less wear on the pump body and longer service life.

[0006] In order to solve the above technical problems, the technical solution used in the utility model is:

[0007] A powder pump comprises a pump body, a first air delivery pipe and an air blowing mechanism, wherein the air blowing mechanism is located in the pump body, the first air delivery pipe is connected to the pump body, a powder inlet channel and a powder outlet channel which are connected to each other are provided in the pump body, a first air delivery channel is provided in the first air delivery pipe, the first air delivery channel is connected to the air blowing mechanism, the first air delivery channel is connected to the powder outlet channel through the air blowing mechanism, when the first air delivery channel delivers air to the air blowing mechanism, the air blowing mechanism can blow air into the powder outlet channel, the powder inlet channel and the powder outlet channel are arranged at an angle, and the angle is an obtuse angle.

[0008] Preferably, the obtuse angle is 100°-170°.

[0009] Preferably, it also includes a powder outlet pipe, one end of which extends into the pump body, and the other end extends outward relative to the pump body. The powder outlet pipe includes an inner tube and an outer tube, the outer tube is sleeved on the outside of the inner tube, and a cavity is provided in the inner tube, and the cavity is a part of the powder outlet channel.

[0010] Preferably, there is a gap between the outer wall of the inner tube and the inner wall of the outer tube for gas to pass through; the powder pump also includes a second air pipe, the second air pipe is connected to the pump body, a second air channel is arranged in the second air pipe, and the second air channel is connected to the gap.

[0011] Preferably, the powder pump also includes a second air pipe, and fluidizing pipes are respectively provided in the first air pipe and the second air pipe. The fluidizing pipes are located in the air delivery channels of the first air pipe and the second air pipe, and the gas can enter the pump body through the fluidizing pipes in the first air pipe and the second air pipe respectively.

[0012] Preferably, the blowing mechanism comprises an air nozzle, which is arranged between the first air supply pipe and the powder outlet channel, and the first air supply pipe is connected to the powder outlet channel through the air nozzle; the inner diameter of the air nozzle is smaller than the inner diameter of the first air supply channel.

[0013] Preferably, the blowing mechanism includes a connecting tube and an air nozzle, the connecting tube is provided with a first air inlet and a ventilation cavity, the air nozzle is located in the ventilation cavity, and the air nozzle is provided with a second air inlet and a second air outlet; the second air inlet and the second air outlet are respectively connected with the first air inlet and the ventilation cavity; the first air inlet is also connected with the first air supply channel, and the first air supply channel can supply air to the air nozzle through the first air inlet.

[0014] Preferably, the powder pump further includes a powder outlet pipe and a fastening mechanism, wherein at least a portion of the powder outlet pipe is located within the pump body, a cavity is provided within the powder outlet pipe, and the cavity is a portion of the powder outlet channel; the fastening mechanism includes a fastener, which is movably connected to the pump body, the powder outlet pipe and the pump body are respectively connected to the fastener, and the powder outlet pipe can be fixed to the pump body via the fastener.

[0015] Preferably, the fastening mechanism comprises a mounting seat, an elastic member and a clamping member, and the mounting seat is movably connected to the pump body; the elastic member and the clamping member are arranged on the same side of the mounting seat; an opening is provided on the pump body that passes through the upper and lower parts corresponding to the clamping member, and the clamping member is connected to the pump body by inserting the opening; one end of the elastic member is connected to the pump body, and the other end is connected to the mounting seat; a pressing part is provided on the mounting seat, and the pressing part can control the clamping member to reciprocate relative to the powder outlet pipe, and a flange is provided at the end of the clamping member, and the clamping member can pass through the opening so that the flange is clamped with the outer wall of the pump body; under the action of the elastic member, the clamping member can clamp or release the powder outlet pipe when it moves.

[0016] Preferably, a through hole is provided on the clamping member, one end of the powder outlet pipe passes through the through hole and extends out of the pump body, and a clamping block is provided on the clamping member, and the clamping block protrudes inwardly relative to the through hole; a clamping groove is provided on the powder outlet pipe, and when the pressing portion is pressed, the pressing portion drives the clamping member to move downward, and the clamping member releases the powder outlet pipe while the clamping block is separated from the clamping groove; when the pressing portion is released, the clamping member is clamped into the clamping groove under the rebound action of the elastic member, so that the clamping member clamps the powder outlet pipe.

[0017] The beneficial effects of the utility model are mainly reflected in: the powder pump provided by the utility model sets the angle between the powder inlet channel and the powder outlet channel to an obtuse angle, so that it has a certain curvature for transition, thereby preventing powder from falling vertically into the pump body and causing excessive wear on the pump body; and powder is not easy to accumulate; at the same time, the powder will enter the powder outlet channel more smoothly, reducing the friction between the powder inlet channel and the pump body, and further improving the service life of the powder pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other purposes, features and advantages of the present invention will become more apparent through a more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals in all the accompanying drawings indicate the same parts, and the drawings are not intentionally scaled to the actual size, but the focus is on illustrating the subject matter of the present invention.

[0019] Figure 1 This is a schematic cross-sectional structure diagram of the first embodiment of the powder pump of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first embodiment of the powder pump of the utility model from a front view perspective;

[0021] Figure 3 This is a schematic diagram of the explosion structure of the first embodiment of the powder pump in the utility model;

[0022] Figure 4 This is a schematic cross-sectional view of a second embodiment of the powder pump of the utility model;

[0023] Figure 5 for Figure 4 A partial enlarged schematic diagram of part A;

[0024] Figure 6 This is a schematic diagram of the explosion structure of the second embodiment of the powder pump in the utility model;

[0025] Figure 7 It is a schematic diagram of the overall structure of the fastening mechanism in the utility model;

[0026] Figure 8This is a schematic diagram of the overall structure of the blowing mechanism in the preferred embodiment of the utility model;

[0027] Fig. 9 This is a schematic cross-sectional structure diagram of the blowing mechanism in the preferred embodiment of the utility model;

[0028] Fig.10 This is a schematic diagram of the overall structure of the second embodiment of the powder pump of the utility model;

[0029] In the figure: pump body 1, powder inlet channel 10, powder outlet channel 11, opening 12, first air pipe 2, first air channel 20, blowing mechanism 3, air nozzle 30, second air inlet 301, second air outlet 302, connecting pipe 31, first air inlet 310, ventilation cavity 311, powder outlet pipe 4, inner tube 40, cavity 401, outer tube 41, second air pipe 5, second air channel 50, fluidizing tube 51, fastening machine mechanism 6, fastener 60, mounting seat 61, pressing part 612, elastic member 62, clamping member 63, through hole 630, block 631, slot 632, flange 633. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0031] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0033] refer to Figure 1-10 The utility model provides a powder pump, comprising a pump body 1, a first air delivery pipe 2 and an air blowing mechanism 3, characterized in that: the air blowing mechanism 3 is located in the pump body 1, the first air delivery pipe 2 is connected to the pump body 1, a powder inlet channel 10 and a powder outlet channel 11 are provided in the pump body 1, a first air delivery pipe 2 is provided with a first air delivery channel 20, the first air delivery channel 20 is connected to the air blowing mechanism 3, the first air delivery channel 20 is connected to the powder outlet channel 11 through the air blowing mechanism 3, when the first air delivery channel 20 delivers air to the air blowing mechanism 3, the air blowing mechanism 3 can blow air into the powder outlet channel 11, the powder inlet channel 10 and the powder outlet channel 11 are arranged at an angle, and the angle is an obtuse angle (i.e. Figure 1 Or the angle where α in 4 is an obtuse angle).

[0034] The specific working process of the powder pump provided by the utility model is as follows:

[0035] When in use, the first air delivery pipe 2 is fed with air, and the gas enters the blowing mechanism 3 from the first air delivery channel 20, and then is sprayed toward the powder outlet channel 11 by the blowing mechanism 3. When the gas is sprayed toward the powder outlet channel 11 at high speed, a negative pressure is formed at the connection between the powder inlet channel 10 and the powder outlet channel 11, and the powder is sucked into the powder inlet channel 10, thereby mixing with the gas, and the powder is transported and sprayed toward the powder outlet channel 11 by the gas, thereby spraying the surface of the workpiece. In this embodiment, by setting the angle between the powder inlet channel 10 and the powder outlet channel 11 to an obtuse angle, compared with the traditional vertical setting between the two, the following beneficial effects are achieved: there is a certain curvature between the powder inlet channel 10 and the powder outlet channel 11 for transition, so as to avoid the powder falling vertically into the pump body 1 and causing excessive wear on the pump body 1; and the powder is not easy to accumulate; at the same time, the powder will enter the powder outlet channel 11 more smoothly, reducing the friction between the pump body 1 and the powder pump, and further improving the service life of the powder pump.

[0036] refer to Figure 1 and 4 , in a preferred embodiment, the obtuse angle is 100°-170°.

[0037] In a further preferred embodiment, the angle between the powder inlet channel 10 and the powder outlet channel 11 can be 100°, 110°, 120°, 130°, 140°, 150°, 160° or 170°; if the angle is set too small, it is easy to have the same situation as the previous vertical setting, and the impact force on the pump body 1 is too large when the powder enters the pump body 1; and if the angle is too large, it will cause the curvature transition between the powder inlet channel 10 and the powder outlet channel 11 to be not good enough, and powder accumulation will easily occur.

[0038] refer to Figure 1 and 2 In a preferred embodiment, it also includes a powder outlet pipe 4, one end of which extends into the pump body 1, and the other end extends outward relative to the pump body 1. The powder outlet pipe 4 includes an inner tube 40 and an outer tube 41. The outer tube 41 is sleeved on the outer side of the inner tube 40. A cavity 401 is provided in the inner tube 40, and the cavity 401 is a part of the powder outlet channel 11.

[0039] refer to Figure 1 and 4In a further preferred embodiment, there is a gap between the outer wall of the inner tube 40 and the inner wall of the outer tube 41 for gas to pass through; the powder pump also includes a second air pipe 5, the second air pipe 5 is connected to the pump body 1, and a second air channel 50 is arranged in the second air pipe 5, and the second air channel 50 is connected to the gap.

[0040] Specifically, one end of the second air pipe 5 is connected to the pump body 1. When the second air pipe 5 starts to take in air, the gas enters the gap between the inner tube 40 and the outer tube 41 through the second air channel 50. During the powder conveying process, the gas flowing through the gap can play a role in assisting the air supply. The purpose is to transport the powder more quickly and over a longer distance, so that the powder can be sprayed at a longer distance and the powder output effect is better.

[0041] refer to Figure 1-4 ,,6. In a preferred embodiment, the powder pump also includes a second air pipe 5, and fluidizing pipes 51 are respectively provided in the first air pipe 2 and the second air pipe 5. The fluidizing pipe 51 is located in the air delivery channel of the first air pipe 2 and the second air pipe 5. The gas can enter the pump body 1 through the fluidizing pipes 51 in the first air pipe 2 and the second air pipe 5 respectively.

[0042] In this embodiment, the fluidizing tube 51 has good air permeability. A plurality of micropores are arranged at intervals on the fluidizing tube 51. Gas can enter the powder outlet channel 11 through these micropores, while on the other hand, the entry of powder can be blocked.

[0043] refer to Figure 1 In a preferred embodiment, the blowing mechanism 3 includes an air nozzle 30, which is arranged between the first air pipe 2 and the powder outlet channel 11, and the first air pipe 2 is connected to the powder outlet channel 11 through the air nozzle 30; the inner diameter of the air nozzle 30 is smaller than the inner diameter of the first air pipe 20.

[0044] refer to Figure 1 , Figure 1 This is the first embodiment provided by the utility model. In this embodiment, the air inlet of the air nozzle 30 is connected to the first air delivery channel 20, and the air outlet of the air nozzle 30 is connected to the powder delivery channel 11, and the gas is sprayed into the powder delivery channel 11 through the air nozzle 30; and the inner diameter of the air nozzle 30 is smaller than the inner diameter of the first air delivery channel 20, so that the gas is compressed to a certain extent and can be sprayed out at a high speed when reaching the air outlet of the air nozzle 30, so that the powder can be quickly inhaled and mixed with the gas.

[0045] refer to Figure 4In a preferred embodiment, the blowing mechanism 3 includes a connecting tube 31 and an air nozzle 30. The connecting tube 31 is provided with a first air inlet 310 and a ventilation cavity 311. The air nozzle 30 is located in the ventilation cavity 311. The air nozzle 30 is provided with a second air inlet 301 and a second air outlet 302. The second air inlet 301 and the second air outlet 302 are respectively connected to the first air inlet 310 and the ventilation cavity 311. The first air inlet 310 is also connected to the first air supply channel 20, and the first air supply channel 20 can supply air to the air nozzle 30 through the first air inlet 310.

[0046] refer to Figure 4 , Figure 4 A second embodiment of the utility model is provided. In this embodiment, there is a certain gap between the connecting tube 31 and the air outlet of the first air supply channel 20, and the gap can connect the air outlet of the first air supply channel 20 and the first air inlet 310 of the connecting tube 31; specifically, the gas of the first air supply channel 20 will first enter the first air inlet 310 through the gap, and then enter the second air inlet 301 of the air nozzle 30 from the first air inlet 310, and finally be sprayed into the powder outlet channel 11 through the second air outlet 302 of the air nozzle 30; in a further preferred embodiment, the air nozzle 30 can be integrally arranged with the connecting tube 31, and the first air inlet 310 and the second air inlet 301 can be the same.

[0047] refer to Figure 2 and 3 In a preferred embodiment, the powder pump further includes a powder outlet pipe 4 and a fastening mechanism 6, wherein at least a portion of the powder outlet pipe 4 is located in the pump body 1, and a cavity 401 is provided in the powder outlet pipe 4, and the cavity 401 is a portion of the powder outlet channel 11; the fastening mechanism 6 includes a fastener 60, which is movably connected to the pump body 1, and the powder outlet pipe 4 and the pump body 1 are respectively connected to the fastener 60, and the powder outlet pipe 4 can be fixed to the pump body 1 through the fastener 60.

[0048] In this embodiment, the vent cavity 311 and the cavity 401 are interconnected, and both are part of the powder outlet channel 11; and the inner diameter of the vent cavity 311 is larger than the inner diameter of the cavity 401; its function is also to compress the gas when passing through the cavity 401, so as to achieve long-distance and fast transportation. In the first embodiment provided in this embodiment, the fastener 60 can be a nut, that is, the powder outlet pipe 4 is fixed to the pump body 1 by the nut. When the powder outlet pipe 4 needs to be disassembled, it only needs to turn the nut in different directions (clockwise / counterclockwise) to lock or loosen the powder outlet pipe 4, thereby achieving installation or disassembly of the powder outlet pipe 4.

[0049] refer to Figure 4-10In a further preferred embodiment, the fastening mechanism 6 includes a mounting seat 61, an elastic member 62 (such as a spring) and a clamping member 63, and the mounting seat 61 is movably connected to the pump body 1; the elastic member 62 and the clamping member 63 are arranged on the same side of the mounting seat 61 (refer to Figure 6 , the same side referred to here means that the elastic member 62 and the clamping member 63 are also located at the bottom of the mounting seat 61); the pump body 1 is provided with an opening 12 that passes through the upper and lower parts corresponding to the clamping member 63 (the so-called opening 12 corresponds to the clamping member 63 means that the shape and size of the opening 12 correspond to the clamping member 63, so that the clamping member 63 can be smoothly inserted into the opening 12); the clamping member 63 is connected to the pump body 1 by inserting the opening 12; one end of the elastic member 62 is connected to the pump body 1, and the other end is connected to the mounting seat 61; a pressing portion 612 is provided on the mounting seat 61, and the pressing portion 612 can control the clamping member 63 to reciprocate relative to the powder outlet pipe 4, and a flange 633 is provided at the end of the clamping member 63, and the clamping member 63 can pass through the opening 12 so that the flange 633 is clamped with the outer wall of the pump body 1; under the action of the elastic member 62, the clamping member 63 can clamp or loosen the powder outlet pipe 4 when moving.

[0050] In this embodiment, both ends of the elastic member 62 can be fixed to the pump body 1 and the mounting seat 61 respectively and cannot be removed; or a detachable setting can be adopted as required.

[0051] Referring to 4-7, in a preferred embodiment, a through hole 630 is provided on the clamping member 63, one end of the powder outlet pipe 4 passes through the through hole 630 and extends outward from the pump body 1, and a clamping block 631 is provided on the clamping member 63, and the clamping block 631 protrudes inwardly relative to the through hole 630 (refer to Figure 7 , the so-called inward protrusion means that the direction toward the center of the through hole 630 is taken as the reference, and the direction toward the center of the circle is the inward direction); a clamping groove 632 is provided on the powder outlet pipe 4, and when the pressing portion 612 is pressed, the pressing portion 612 drives the clamping member 63 to move downward, and the clamping block 631 is separated from the clamping groove 632, and the clamping member 63 releases the powder outlet pipe 4; when the pressing portion 612 is released, the clamping block 631 is clamped into the clamping groove 632 under the rebound action of the elastic member 62, so that the clamping member 63 clamps the powder outlet pipe 4.

[0052] In the second embodiment provided by the present utility model, the powder outlet pipe 4 can be fixed or disassembled with the pump body 1 by means of a clamping member 63; Figure 4 and 5 When the operator presses the pressing portion 612 on the mounting seat 61, the clamping member 63 and the elastic member 62 will be driven to move toward the powder outlet pipe 4 (from the operator's first perspective, that is, Figure 4or downward movement in 5), when the clamping member 63 moves downward, the clamping block 631 on the clamping end is disengaged from the clamping slot 632, that is, the clamping block 631 is separated from the clamping slot 632, and the clamping member 63 releases the powder outlet pipe 4 at this time, and the operator can disassemble and replace the powder outlet pipe 4; after reinstalling the powder outlet pipe 4, the operator releases the pressing part 612 at this time, and under the action of the rebound force of the elastic member 62, the clamping member 63 moves upward, and the clamping block 631 on the clamping end is re-engaged in the clamping slot 632, thereby clamping the powder outlet pipe 4. The advantage of adopting this method is that the powder outlet pipe 4 can be quickly replaced, the operation is convenient, and the nut will not fall off.

[0053] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A powder pump, comprising a pump body, a first air delivery pipe and an air blowing mechanism, characterized in that: The air blowing mechanism is located in the pump body, the first air delivery pipe is connected to the pump body, a powder inlet channel and a powder outlet channel are connected to each other in the pump body, a first air delivery channel is arranged in the first air delivery pipe, the first air delivery channel is connected to the air blowing mechanism, and the first air delivery channel is connected to the powder outlet channel through the air blowing mechanism. When the first air delivery channel delivers air to the air blowing mechanism, the air blowing mechanism can blow air into the powder outlet channel. The powder inlet channel and the powder outlet channel are arranged at an angle, and the angle is an obtuse angle.

2. The powder pump according to claim 1, characterized in that: The obtuse angle is 100°-170°.

3. The powder pump according to claim 1, characterized in that: It also includes a powder outlet pipe, one end of which extends into the pump body, and the other end extends outward relative to the pump body. The powder outlet pipe includes an inner tube and an outer tube, the outer tube is sleeved on the outside of the inner tube, and a cavity is provided in the inner tube, and the cavity is a part of the powder outlet channel.

4. The powder pump according to claim 3, characterized in that: There is a gap between the outer wall of the inner tube and the inner wall of the outer tube for gas to pass through; the powder pump also includes a second air pipe, the second air pipe is connected to the pump body, a second air channel is arranged in the second air pipe, and the second air channel is connected to the gap.

5. The powder pump according to claim 1, characterized in that: The powder pump also includes a second air pipe. Fluidizing pipes are respectively provided in the first air pipe and the second air pipe. The fluidizing pipes are located in the air delivery channels of the first air pipe and the second air pipe. Gas can enter the pump body through the fluidizing pipes in the first air pipe and the second air pipe.

6. The powder pump according to claim 1, characterized in that: The air blowing mechanism comprises an air nozzle, which is arranged between the first air supply pipe and the powder outlet channel, and the first air supply pipe is connected with the powder outlet channel through the air nozzle; the inner diameter of the air nozzle is smaller than the inner diameter of the first air supply channel.

7. The powder pump according to claim 1, characterized in that: The blowing mechanism includes a connecting pipe and an air nozzle. The connecting pipe is provided with a first air inlet and a ventilation cavity. The air nozzle is located in the ventilation cavity. The air nozzle is provided with a second air inlet and a second air outlet. The second air inlet and the second air outlet are respectively connected with the first air inlet and the ventilation cavity. The first air inlet is also connected with the first air supply channel, and the first air supply channel can supply air to the air nozzle through the first air inlet.

8. The powder pump according to claim 1, characterized in that: The powder pump also includes a powder outlet pipe and a fastening mechanism, wherein at least a portion of the powder outlet pipe is located in the pump body, a cavity is provided in the powder outlet pipe, and the cavity is a part of the powder outlet channel; the fastening mechanism includes a fastener, which is movably connected to the pump body, the powder outlet pipe and the pump body are respectively connected to the fastener, and the powder outlet pipe can be fixed to the pump body by the fastener.

9. The powder pump according to claim 8, characterized in that: The fastening mechanism comprises a mounting seat, an elastic member and a clamping member, and the mounting seat is movably connected to the pump body; the elastic member and the clamping member are arranged on the same side of the mounting seat; an opening corresponding to the clamping member and passing through the upper and lower parts is provided on the pump body, and the clamping member is connected to the pump body by inserting the opening; one end of the elastic member is connected to the pump body, and the other end is connected to the mounting seat; a pressing part is provided on the mounting seat, and the pressing part can control the clamping member to reciprocate relative to the powder outlet pipe, and a flange is provided at the end of the clamping member, and the clamping member can pass through the opening so that the flange is clamped with the outer wall of the pump body; under the action of the elastic member, the clamping member can clamp or release the powder outlet pipe when moving.

10. The powder pump according to claim 9, characterized in that: The clamping member is provided with a through hole, one end of the powder outlet pipe passes through the through hole and extends out of the pump body, the clamping member is provided with a clamping block, and the clamping block protrudes inwardly relative to the through hole; the powder outlet pipe is provided with a clamping groove, when the pressing part is pressed, the pressing part drives the clamping member to move downward, and the clamping member releases the powder outlet pipe while the clamping block is separated from the clamping groove; when the pressing part is released, the clamping member is clamped into the clamping groove under the rebound action of the elastic member, so that the clamping member clamps the powder outlet pipe.

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