Liquid solvent dispensing device

Abstract

The utility model relates to the technical field of liquid distribution, and provides a liquid solvent distribution device which comprises a shell provided with a mounting space and a first liquid outlet communicated with the mounting space; the liquid inlet assembly is rotationally arranged in the mounting space, the liquid inlet assembly comprises a center shaft and a main lining, the center shaft is provided with a liquid channel, the liquid channel is provided with a second liquid outlet and a liquid inlet, the outer side face of the center shaft is sleeved with the main lining, the main lining is provided with a liquid separation groove, and the second liquid outlet is communicated with the liquid separation groove; and under the condition that the liquid inlet assembly rotates, the liquid separation groove can be connected with or disconnected from the first liquid outlet. The liquid solvent distribution device can realize mechanical automatic opening and closing operation, is different from an electric control process, reduces the control difficulty, realizes mechanical follow-up control, not only simplifies the control difficulty, but also increases the control precision, and does not cause delay and lag of the control process like the electric control.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid distribution, in particular to a liquid solvent distribution device. Background Art

[0002] During agricultural fertilization or pesticide application, some perennial root crops need to be disinfected by hole piercing and injection; or some crops need to be fertilized at fixed points to reduce fertilizer waste and achieve precise application. Due to various uncertain factors in field operations, pesticides or fertilizers cannot be accurately injected to the target location and cannot be accurately injected. Utility Model Content

[0003] The utility model provides a liquid solvent dispensing device, which is used to solve the problem in the prior art that pesticides or fertilizers cannot be accurately injected.

[0004] The utility model provides a liquid solvent dispensing device, comprising:

[0005] The housing is provided with an installation space and a first liquid outlet communicated with the installation space;

[0006] A liquid inlet assembly is rotatably disposed in the installation space, the liquid inlet assembly comprises a central shaft and a main bushing, the central shaft is provided with a liquid channel, the liquid channel is provided with a second liquid outlet and a liquid inlet, the main bushing is sleeved on the outer side of the central shaft, the main bushing is provided with a liquid separation groove, and the second liquid outlet is communicated with the liquid separation groove;

[0007] Wherein, when the liquid inlet assembly rotates, the liquid separation groove can be connected to or disconnected from the first liquid outlet.

[0008] According to a liquid solvent dispensing device provided by the utility model, the liquid inlet assembly further includes a positioning member, the main bushing is provided with a positioning through hole, the central axis is provided with a positioning blind hole, and the positioning member is sequentially installed in the positioning through hole and the positioning blind hole; and / or,

[0009] A first seal and a second seal, wherein the first seal and the second seal are arranged between the inner surface of the main bushing and the outer surface of the central shaft, the first seal and the second seal are arranged in sequence along the axial direction of the central shaft, and the second liquid outlet is located between the first seal and the second seal.

[0010] According to a liquid solvent dispensing device provided by the utility model, the outer shell includes a shell, a first end cover and a second end cover, the shell is provided with the installation space and a first opening and a second opening connected to the installation space, the first end cover is provided at the first opening, the second end cover is provided at the second opening, the central axis is located between the first end cover and the second end cover at the upper limit of its axial direction, and at least part of the central axis is exposed at the first opening.

[0011] According to a liquid solvent dispensing device provided by the utility model, it also includes a first rolling support member and a second rolling support member fixedly installed in the installation space, the first rolling support member and the second rolling support member are both mounted on the outer side surface of the central axis, the first rolling support member and the second rolling support member are arranged in sequence along the axial direction of the central axis, and the central axis can rotate relative to the first rolling support member and the second rolling support member.

[0012] According to a liquid solvent dispensing device provided by the utility model, it also includes an elastic positioning member, which is arranged on the outer side surface of the central axis, the upper limit of the first rolling support member in the axial direction of the central axis is located between the elastic positioning member and the inner wall of the installation space, and the upper limit of the second rolling support member in the axial direction of the central axis is located between the outer side surface of the central axis and the inner wall of the installation space.

[0013] According to a liquid solvent dispensing device provided by the utility model, it also includes a third seal and a fourth seal, and the third seal and the fourth seal are arranged between the inner wall of the installation space and the outer side surface of the central axis, and the third seal and the fourth seal are arranged in sequence along the axial direction of the central axis.

[0014] According to a liquid solvent dispensing device provided by the utility model, it also includes a first auxiliary bushing and a second auxiliary bushing, the first auxiliary bushing and the second auxiliary bushing are both mounted on the outer side surface of the central shaft, the first auxiliary bushing and the second auxiliary bushing are arranged in sequence along the axial direction of the central shaft, the main bushing is located between the first auxiliary bushing and the second auxiliary bushing, and the main bushing is located between the outer side surface of the central shaft and the inner wall of the installation space at the upper limit of the axial direction of the central shaft through the first auxiliary bushing and the second auxiliary bushing.

[0015] According to a liquid solvent distribution device provided by the utility model, the main bushing has a first end surface and a second end surface opposite to each other, and the liquid separation groove extends from the first end surface to the second end surface.

[0016] According to a liquid solvent dispensing device provided by the utility model, there are multiple first liquid outlets, the liquid outputs of the multiple first liquid outlets are different, and the multiple first liquid outlets are arranged in sequence along the circumferential direction of the shell.

[0017] According to a liquid solvent dispensing device provided by the utility model, the liquid solvent dispensing device further comprises a mounting seat, and the mounting seat is sleeved on the outer surface of the shell.

[0018] The liquid solvent dispensing device provided by the utility model has a simple overall design and a reasonable structure. Through the mutual cooperation of various components, the solvent can be distributed and the agent can be adjusted dynamically. In particular, during the process of acupuncture injection, the solvent can be operated during the process of the acupuncture injection mechanism entering the soil. The channel of the liquid solvent dispensing device is just opened when entering the soil, and the solvent enters the soil through the first liquid outlet. Following the rotation of the acupuncture injection mechanism, the first liquid outlet is opened and closed, and the opening changes from small to large and then to small until it is completely closed. During the process, the solvent is injected into the soil and then stops coming out of the soil. The whole process realizes mechanical automatic opening and closing operation, which is different from the electric control process, reduces the control difficulty, and realizes mechanical follow-up control, which simplifies the control difficulty and increases the control accuracy. Unlike electric control, there will be no delay in the control process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of a liquid solvent dispensing device provided by the utility model.

[0021] Figure 2 It is a side view of the liquid solvent dispensing device provided by the utility model.

[0022] Figure 3 yes Figure 2 One of the AA section views.

[0023] Figure 4 yes Figure 2 The second AA section view.

[0024] Figure 5 It is a structural schematic diagram of the main bushing provided by the utility model.

[0025] Reference numerals:

[0026] 1. Shell; 101. Shell; 102. First end cover; 103. Second end cover;

[0027] 2. Liquid inlet assembly; 21. Central axis; 22. Main bushing; 221. End surface; 222. Positioning through hole; 223. Liquid separation groove;

[0028] 3. Mounting seat; 4. Elastic positioning member; 5. First rolling support member; 6. Third sealing member; 7. First auxiliary bushing; 8. Positioning member; 9. First sealing member; 10. Second sealing member; 11. Second auxiliary bushing; 12. Fourth sealing member; 13. Second rolling support member; B. Liquid channel; C. First liquid outlet. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Combine the following Figures 1 to 5 The invention describes a liquid solvent dispensing device.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the liquid solvent dispensing device of the embodiment of the utility model can be used for dispensing liquid solvents such as liquid medicine and fertilizer, and the liquid solvent dispensing device includes: a shell 1 and a liquid inlet component, the shell 1 is provided with an installation space and a first liquid outlet C connected to the installation space; the liquid inlet component is rotatably arranged in the installation space, that is, the liquid inlet component can rotate relative to the installation space, for example, the liquid inlet component can rotate 360 ​​degrees relative to the installation space under the action of the driving member.

[0032] In addition, the liquid inlet assembly includes a central shaft 21 and a main bushing 22. The central shaft 21 serves as a flow carrier of the liquid solvent. The central shaft 21 is provided with a liquid channel B. The liquid channel B is provided with a second liquid outlet and a liquid inlet. The liquid inlet can be connected to an external liquid solvent supply device. The main bushing 22 is sleeved on the outer side of the central shaft 21. The main bushing 22 is provided with a liquid separation groove 223. The second liquid outlet is connected to the liquid separation groove 223. The main bushing 22 is in a hollow cylindrical shape. The main bushing 22 can be provided with a notch to form the liquid separation groove 223. In this way, the liquid flow rate of the liquid separation groove 223 is greater than the liquid flow rate of the second liquid outlet. In other words, the volume of the liquid separation groove 223 determines the liquid flow rate.

[0033] Wherein, when the liquid inlet assembly rotates, the liquid separation groove 223 can be connected or disconnected with the first liquid outlet C. Specifically, when the liquid separation groove 223 is connected with the first liquid outlet C, the external liquid solvent first enters the liquid channel B through the liquid inlet, and the liquid solvent entering the liquid channel B enters the liquid separation groove 223 through the second liquid outlet, and finally flows out through the liquid separation groove 223 and the first liquid outlet C in sequence. When the liquid separation groove 223 is disconnected from the first liquid outlet C, the external liquid solvent first enters the liquid channel B through the liquid inlet, and the liquid solvent entering the liquid channel B enters the liquid separation groove 223 through the second liquid outlet, while the liquid solvent inside the liquid separation groove 223 cannot flow out from the first liquid outlet C.

[0034] When in use, the liquid solvent dispensing device is installed at a designated location, which can be a soil disinfection operation or a point fertilization operation. The liquid solvent dispensing device can be installed at the center of the acupuncture injection mechanism. During operation, the liquid solvent dispensing device rotates with the rotation of the acupuncture injection mechanism. The central axis 21 is fixed to the operating equipment. As the operating equipment moves forward, the acupuncture injection mechanism rotates forward, and the main sleeve 22 of the liquid solvent dispensing device also rotates around the central axis 21. The solution channel of the central axis 21 is perpendicular to the ground. The main sleeve 22 and the acupuncture injection mechanism rotate around the central axis 21, and the liquid solvent is injected into the soil through the first liquid outlet C. The liquid solvent dispensing device can realize real-time opening and closing of the liquid solution.

[0035] In an optional embodiment, if Figure 3 and Figure 4 As shown, the liquid inlet assembly further includes a positioning member 8, the main bushing 22 is provided with a positioning through hole 222, the central shaft 21 is provided with a positioning blind hole, and the positioning member 8 is sequentially installed in the positioning through hole 222 and the positioning blind hole.

[0036] The main function of the positioning member 8 is to ensure the precise alignment and fixation between the main bushing 22 and the central shaft 21. By being installed in the positioning through hole 222 and the positioning blind hole, the positioning member 8 effectively prevents the relative movement between the main bushing 22 and the central shaft 21, thereby improving the overall stability of the assembly.

[0037] It can be seen that the structural stability of the liquid inlet assembly is significantly improved by introducing the positioning member 8. The precise alignment and fixing function of the positioning member 8 ensures a tight fit between the main bushing 22 and the central shaft 21, thereby improving the transmission efficiency of the liquid.

[0038] In addition, the first seal 9 and the second seal 10 are arranged between the inner surface of the main bushing 22 and the outer side surface of the center shaft 21. The first seal 9 and the second seal 10 are arranged in sequence along the axial direction of the center shaft 21, and the second liquid outlet is located between the first seal 9 and the second seal 10.

[0039] It should be noted that the second liquid outlet is located between the first sealing member 9 and the second sealing member 10 , so that the sealing performance in the axial direction of the central axis 21 is ensured and the effective outlet of the liquid is achieved.

[0040] Exemplarily, the outer side surface of the central shaft 21 is provided with a mounting groove adapted to the first seal 9 and the second seal 10, and the first seal 9 and the second seal 10 are arranged in the corresponding mounting grooves, wherein the first seal 9 and the second seal 10 can be O-rings.

[0041] In another optional embodiment, if Figure 3 and Figure 4 As shown, the housing 1 includes a shell 101, a first end cover 102 and a second end cover 103. The shell 101 is provided with an installation space and a first opening and a second opening connected to the installation space. The first end cover 102 is provided at the first opening, and the second end cover 103 is provided at the second opening. The upper limit of the central axis 21 in the axial direction is located between the first end cover 102 and the second end cover 103, and at least part of the central axis 21 is exposed at the first opening. The first opening and the second opening are arranged opposite to each other, and the shell 101 is provided with a first liquid outlet C, and the first liquid outlet C is arranged through the inner surface and the outer surface of the shell 101.

[0042] In a specific embodiment, the design of the housing 1 adopts a split structure, including a shell 101, a first end cover 102 and a second end cover 103. The shell 101 is the main part of the shell 1, and an installation space is provided inside the shell 101 for accommodating and installing the liquid inlet assembly and other components. The first end cover 102 is provided at the first opening of the shell 101, and is used to close one end of the installation space, and cooperates with one end of the central axis 21 to achieve a limiting effect. The second end cover 103 is provided at the second opening of the shell 101, and is also used to close the other end of the installation space, and cooperates with the other end of the central axis 21 to achieve a limiting effect. Among them, the first end cover 102 and the second end cover 103 can be connected to the shell 101 by fasteners.

[0043] The upper limit of the central shaft 21 in its axial direction is located between the first end cover 102 and the second end cover 103, which ensures the stability of the central shaft 21 during operation and prevents it from deflecting or shaking. In addition, at least part of the central shaft 21 is exposed to the first opening, which facilitates connection and transmission with external equipment or components.

[0044] Among them, the liquid channel B includes a first part and a second part that are perpendicular to each other, the first part extends along the axial direction of the central axis 21, and the second part extends along the axial direction perpendicular to the central axis 21. The liquid inlet is formed at one end of the first part away from the second part and is located outside the shell 101, and the first liquid outlet C is formed at one end of the second part away from the first part.

[0045] It should be noted that the first end cover 102 and the second end cover 103 can respectively protect and seal the two ends of the housing 101 to prevent impurities from entering the bearing or the central shaft 21 and causing damage.

[0046] In an optional embodiment, if Figure 3 and Figure 4 As shown, it also includes a first rolling support member 5 and a second rolling support member 13 fixedly installed in the installation space, the first rolling support member 5 and the second rolling support member 13 are both mounted on the outer side of the central shaft 21, the first rolling support member 5 and the second rolling support member 13 are sequentially arranged along the axial direction of the central shaft 21, and the central shaft 21 can rotate relative to the first rolling support member 5 and the second rolling support member 13. Among them, the first rolling support member 5 and the second rolling support member 13 can be bearings, so that it can ensure that the central shaft 21 can rotate around its axial direction.

[0047] In an optional embodiment, if Figure 3 and Figure 4As shown, it also includes an elastic positioning member 4, which is arranged on the outer side surface of the central axis 21. The upper limit of the first rolling support member 5 in the axial direction of the central axis 21 is located between the elastic positioning member 4 and the inner wall of the installation space, and the upper limit of the second rolling support member 13 in the axial direction of the central axis 21 is located between the outer side surface of the central axis 21 and the inner wall of the installation space.

[0048] It should be noted that the outer side surface of the central shaft 21 is provided with a mounting groove for assembling the elastic positioning member 4, a part of the elastic positioning member 4 is located in the mounting groove, and the other part is located outside the mounting groove, so that the first rolling support member 5 can be located between the elastic positioning member 4 and the step surface on the inner wall of the installation space in the axial direction of the central shaft 21. Similarly, the second rolling support member 13 can be located between the step surface on the outer side surface of the central shaft 21 and the step surface on the inner wall of the installation space in the axial direction of the central shaft 21.

[0049] In an optional embodiment, if Figure 3 and Figure 4 As shown, it also includes a third seal 6 and a fourth seal 12, which are arranged between the inner wall of the installation space and the outer side surface of the central axis 21, and the third seal 6 and the fourth seal 12 are arranged in sequence along the axial direction of the central axis 21.

[0050] It should be noted that the liquid separation groove 223 is located between the third sealing member 6 and the fourth sealing member 12, so that the sealing performance in the axial direction of the central axis 21 is guaranteed and the effective extraction of the liquid is achieved.

[0051] Exemplarily, the inner surface of the housing 101 is provided with mounting grooves adapted to the third seal 6 and the fourth seal 12, and the third seal 6 and the fourth seal 12 are arranged in the corresponding mounting grooves, wherein the third seal 6 and the fourth seal 12 can be sealing rings.

[0052] In an optional embodiment, if Figure 3 and Figure 4 As shown, it also includes a first auxiliary bushing 7 and a second auxiliary bushing 11. The first auxiliary bushing 7 and the second auxiliary bushing 11 are both mounted on the outer side surface of the center shaft 21. The first auxiliary bushing 7 and the second auxiliary bushing 11 are arranged in sequence along the axial direction of the center shaft 21. The main bushing 22 is located between the first auxiliary bushing 7 and the second auxiliary bushing 11, and the main bushing 22 is located between the outer side surface of the center shaft 21 and the inner wall of the installation space at the upper limit of the axial direction of the center shaft 21 through the first auxiliary bushing 7 and the second auxiliary bushing 11.

[0053] It should be noted that the first auxiliary bushing 7 and the second auxiliary bushing 11 can be annular structural parts. The thickness of the first auxiliary bushing 7 and the second auxiliary bushing 11 is the same as that of the main bushing 22. The main bushing 22 is located between the step surface on the outer side surface of the center shaft 21 and the step surface on the inner wall of the installation space at the upper limit of the axial direction of the center shaft 21 through the first auxiliary bushing 7 and the second auxiliary bushing 11. In this way, the movement of the main bushing 22 and the center shaft 21 in the axial direction of the center shaft 21 can be limited to ensure that the center shaft 21 and the main bushing 22 can only rotate around the axial direction of the center shaft 21, and enable the liquid separation groove 223 to be connected to the first liquid outlet C.

[0054] In an optional embodiment, if Figure 5 As shown, the main bushing 22 has a first end surface 221 and a second end surface 221 opposite to each other, and the liquid separation groove 223 extends from the first end surface 221 to the second end surface 221 .

[0055] It should be noted that by extending the liquid separation groove 223 to the two end surfaces 221 of the main bushing 22, the flow efficiency and distribution effect of the liquid are significantly improved.

[0056] In addition, the different widths of the liquid separation grooves 223 can determine the flow rate and opening and closing time of the liquid solvent to a certain extent.

[0057] In an optional embodiment, if Figure 1 and Figure 2 As shown, there are multiple first liquid outlets C, and the liquid output of the multiple first liquid outlets C is different. The multiple first liquid outlets C are arranged in sequence along the circumferential direction of the housing 1. Among them, the hole of the first liquid outlet C is tapped with an internal thread, which can be fixedly connected to an external pipeline. Similarly, the hole of the liquid inlet is tapped with an internal thread, which can be fixedly connected to an external pipeline.

[0058] The plurality of first liquid outlets C may be arranged in sequence at equal intervals along the circumferential direction of the housing 1. Figure 4 The thick dotted arrow in the middle shows the flow path of the liquid solution. When the liquid solvent dispensing device rotates counterclockwise or clockwise, the main sleeve 22 rotates together with the central axis 21. When the liquid separation groove 223 in the main sleeve 22 is aligned with any one of the first liquid outlets C, the liquid solution can flow out from the first liquid outlet C.

[0059] In an optional embodiment, if Figure 1 and Figure 2 As shown, the liquid solvent dispensing device further comprises a mounting seat, which is sleeved on the outer surface of the housing 1 .

[0060] The mounting seat may be a fixed flange. Exemplarily, the fixed flange is welded to the outer surface of the shell 101 .

[0061] It is particularly important to point out that the liquid solvent dispensing device can be controlled by a rotating machine (motor, etc.) to achieve automatic mechanical start and stop control, reduce the waste of pesticides or fertilizers, improve utilization, and achieve precise and accurate control of application.

[0062] Compared with the prior art, the liquid solvent dispensing device of the embodiment of the utility model has a simple overall design and a reasonable structure. Through the mutual cooperation of various components, the distribution of solvent can be realized, and the follow-up adjustment of the agent can be realized. In particular, during the process of acupuncture injection, the solvent can be operated during the process of the acupuncture injection mechanism entering the soil. The channel of the liquid solvent dispensing device is just opened when entering the soil, and the solvent enters the soil through the first liquid outlet C. Following the rotation of the acupuncture injection mechanism, the first liquid outlet C is opened and closed, and the opening changes from small to large and then becomes smaller until it is completely closed. In the process, the solvent is injected into the soil and then stops coming out of the soil. The whole process realizes mechanical automatic opening and closing operation, which is different from the electric control process, reduces the control difficulty, and realizes mechanical follow-up control, which simplifies the control difficulty and increases the control accuracy. Unlike electric control, there will be no delay and lag in the control process.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A liquid solvent dispensing device, characterized in that: include: The housing is provided with an installation space and a first liquid outlet communicated with the installation space; A liquid inlet assembly is rotatably disposed in the installation space, the liquid inlet assembly comprises a central shaft and a main bushing, the central shaft is provided with a liquid channel, the liquid channel is provided with a second liquid outlet and a liquid inlet, the main bushing is sleeved on the outer side of the central shaft, the main bushing is provided with a liquid separation groove, and the second liquid outlet is communicated with the liquid separation groove; Wherein, when the liquid inlet assembly rotates, the liquid separation groove can be connected to or disconnected from the first liquid outlet.

2. The liquid solvent dispensing device according to claim 1, characterized in that: The liquid inlet assembly further includes a positioning member, the main bushing is provided with a positioning through hole, the central axis is provided with a positioning blind hole, and the positioning member is sequentially installed in the positioning through hole and the positioning blind hole; and / or, A first seal and a second seal, wherein the first seal and the second seal are arranged between the inner surface of the main bushing and the outer surface of the central shaft, the first seal and the second seal are arranged in sequence along the axial direction of the central shaft, and the second liquid outlet is located between the first seal and the second seal.

3. The liquid solvent dispensing device according to claim 1, characterized in that: The housing includes a shell, a first end cover and a second end cover. The shell is provided with the installation space and a first opening and a second opening connected to the installation space. The first end cover is provided at the first opening, and the second end cover is provided at the second opening. The central axis is located between the first end cover and the second end cover at the upper limit of its axial direction, and at least part of the central axis is exposed at the first opening.

4. The liquid solvent dispensing device according to claim 1, characterized in that: It also includes a first rolling support member and a second rolling support member fixedly installed in the installation space, the first rolling support member and the second rolling support member are both mounted on the outer side surface of the central axis, the first rolling support member and the second rolling support member are arranged in sequence along the axial direction of the central axis, and the central axis can rotate relative to the first rolling support member and the second rolling support member.

5. The liquid solvent dispensing device according to claim 4, characterized in that: It also includes an elastic positioning member, which is arranged on the outer side surface of the central axis. The upper limit of the first rolling support member in the axial direction of the central axis is located between the elastic positioning member and the inner wall of the installation space, and the upper limit of the second rolling support member in the axial direction of the central axis is located between the outer side surface of the central axis and the inner wall of the installation space.

6. The liquid solvent dispensing device according to claim 1, characterized in that: It also includes a third seal and a fourth seal, which are arranged between the inner wall of the installation space and the outer side surface of the central axis, and the third seal and the fourth seal are arranged in sequence along the axial direction of the central axis.

7. The liquid solvent dispensing device according to claim 1, characterized in that: It also includes a first auxiliary bushing and a second auxiliary bushing, wherein the first auxiliary bushing and the second auxiliary bushing are both mounted on the outer side surface of the center shaft, and the first auxiliary bushing and the second auxiliary bushing are arranged in sequence along the axial direction of the center shaft, and the main bushing is located between the first auxiliary bushing and the second auxiliary bushing, and the main bushing is located between the outer side surface of the center shaft and the inner wall of the installation space at the upper limit of the axial direction of the center shaft through the first auxiliary bushing and the second auxiliary bushing.

8. The liquid solvent dispensing device according to claim 1, characterized in that: The main bushing has a first end surface and a second end surface opposite to each other, and the liquid separation groove extends from the first end surface to the second end surface.

9. The liquid solvent dispensing device according to claim 1, characterized in that: There are multiple first liquid outlets, the liquid outlets of the multiple first liquid outlets are different, and the multiple first liquid outlets are arranged in sequence along the circumferential direction of the shell.

10. The liquid solvent dispensing device according to claim 1, characterized in that: The liquid solvent dispensing device further comprises a mounting seat, and the mounting seat is sleeved on the outer surface of the housing.

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