An oil circuit reversing device

Abstract

An oil circuit reversing device includes a pump body, a pump cavity having an opening therein, and M piston rods that move in and out of the pump cavity; each piston rod has T grooves on its surface; the pump body includes oil and gas passages that are interconnected with the T grooves on the piston rods; the oil and gas passages within the pump body are arranged in a staggered manner in the corresponding axial directions of the same piston rod. When switching between the oil and gas circuits is required, this can be accomplished using the same device, eliminating the need to activate separate devices.

Description

Technical Field

[0001] The invention belongs to the field of textile machinery, and in particular relates to an oil circuit reversing device. Background Art

[0002] In the existing field of textile machinery, the rotating work surface is often covered with stains due to the large amount of flying yarn or other textile threads during production. In order to clean the work surface with cleaning oil and blow dry the work surface in time, workers often need to divide it into two steps, namely spraying oil with an oil spray gun and then blowing the work surface dry with a hair dryer. This workflow is complicated and the rotation of work steps is troublesome. It is necessary to constantly use the oil system and the air system to switch work. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides an oil circuit reversing device.

[0004] The technical solution of the present invention is:

[0005] An oil circuit reversing device comprises a pump body (1), a pump body inner cavity (8) with a hole in the pump body (1), and M piston rods (2) that move in and out of the pump body inner cavity (8); each piston rod (2) has T grooves (202) on its surface; and an oil circuit (501) and an air circuit (502) that are connected to and communicate with the T grooves (202) on the piston rod (2) are provided in the pump body (1).

[0006] The piston column (2) moves in and out along the axial direction of the piston column (2) in the inner cavity (8) of the pump body, so that the groove (202) on the piston column (2) can be connected to the oil passage (501) or the gas passage (502). When the groove (202) of the piston column (2) is connected to the oil passage (501), the gas passage (502) is blocked and blocked. When the groove (202) of the piston column (2) is connected to the gas passage (502), the oil passage (501) is blocked and blocked.

[0007] The relevant passages in the present invention are only exemplified as two passages, namely the oil passage (501) and the gas passage (502). Of course, there may be multiple passages.

[0008] Preferably, the oil passages (501) and the gas passages (502) in the pump body (1) are arranged in a staggered manner in the corresponding axial direction of the same piston column (2). When the oil passages (501) and the gas passages (502) are spatially networked in the pump body inner cavity (8), the oil passages (501) and the gas passages (502) are arranged in a staggered manner in the corresponding axial direction of the piston column (2), so that the related passages are not smoothly connected.

[0009] Preferably, the groove (202) on the surface of the piston column (2) is an annular groove (202) coaxial with the piston column (2) and distributed in the circumferential direction of the cross section of the piston column (2).

[0010] Preferably, the cross section of the piston column (2) is circular.

[0011] In the present invention, the cross section of the piston column is set to a regular circle, which is convenient for processing and assembly, is not prone to leakage, and the sealing rings described later can be purchased in standardized batches.

[0012] In the present invention, the shape of the groove (202) on the surface of the piston column (2) can be a single groove (202) or a groove (202) formed by a plurality of continuous grooves (202), and the shape and specifications of each groove (202) are the same, that is, the shape of the groove (202) can be changed according to the needs of actual use, and the cross-section of the groove can be various shapes such as annular, elliptical, square, etc., and it is only necessary to change the shape of the matching interface of the oil passage (501) and the gas passage (502) that match the groove (202).

[0013] Preferably, the groove (202) on the surface of the piston rod (2) is connected to the oil passage (501) and the gas passage (502) on the pump body (1) at corresponding positions when the piston rod (2) moves. The pump body (1) also has multiple gas passages (502) connected to the respective air inlets and air outlets. The pump body (1) has an oil inlet (N), an oil outlet (P), and an oil passage (501) that is interconnected with the oil inlet (N) and the oil outlet (P). The pump body (1) has an air inlet, an air outlet, and a gas passage (502) that is interconnected with the air inlet and the air outlet.

[0014] In the present invention, the positions of the grooves (202) on the surface of the piston column (2) are respectively connected to the positions of the various passages on the pump body (1), so that the flow of logistics or airflow at the connection points is not blocked.

[0015] Preferably, each groove (202) of each piston column (2) is provided with a sealing ring (3) on the left and right sides respectively.

[0016] Preferably, each piston column (2) is provided with a sealing ring (3) at both ends.

[0017] Preferably, the piston column (2) that moves in and out of the pump body inner cavity (8) is tightly fitted with the pump body inner cavity (8) without any gap. Because the piston column (2) is circular and the pump body inner cavity (8) is a circular hole that fits the circular piston column (2), the piston column (2) and the pump body inner cavity (8) are in a tight hole-axis fitting relationship; of course, the piston column (2) and the pump body inner cavity (8) can also be in other forms of cavity-axis fitting relationships, such as the piston column (2) can also be a hexagonal cylindrical shaft.

[0018] In the present invention, the sealing ring (3) is mounted on the piston column (2) and is tightly matched with the inner cavity (8) of the pump body to prevent oil leakage, air leakage, water leakage, etc.

[0019] Preferably, the medium flowing through the oil passage (501) and the gas passage (502) can be oil and gas, or other various liquid or gaseous media. Depending on the different circulating media, the sealing rings (3) of different materials and shapes can be replaced. Under special conditions as needed, the cross-sectional shape of the oil passage (501) and the gas passage (502) or various interface shapes can be changed to meet the use requirements.

[0020] Preferably, M≥1, and T≥2.

[0021] Preferably, any two or more of the oil passage (501), the gas passage (502) or other passages can be used. That is, the oil passage (501) and the gas passage (502) are not limited to these two passages, but can also be multiple passages, such as: the oil passage (501), the gas passage (502) and the water passage, a total of three passages can be used. In this case, the number and arrangement of the sealing rings (3) at the head and tail ends of the piston rod (2) need to be adjusted accordingly, and in this case, T≥3;

[0022] In the present invention, when the external force drives the piston column (2) to move to the corresponding position of the corresponding oil passage (501), the oil passage (501) is immediately connected; at this time, the connected oil passage system is fully connected and starts to work; because when the oil passage (501) is connected, the gas passage (502) is blocked by the piston column (2) body, and at this time, the left and right sides of the interface where the piston columns (2) of the oil passage (501) are connected are provided with sealing rings (3) to ensure that the oil body does not leak out. At the same time, the oil passage system is connected and works, and the gas passage system does not work.

[0023] Similarly, when the external force drives the piston rod (2) to move to the corresponding position of the corresponding gas path (502), the gas path (502) is immediately connected; at this time, the connected gas path system is fully connected and starts to work; because when the gas path (502) is connected, and at this time, there are sealing rings (3) on both sides of the interface where the piston rods (2) of the gas path (502) are connected to each other to ensure that the gas does not leak out, at the same time, the oil path (501) is blocked by the piston rod (2) body, at this time, the gas path system is connected and works, and the oil path system does not work.

[0024] In the present invention, when the oil circuit system is connected, the sealing ring (3) needs to be sealed to prevent the oil in the annular groove (202) of the outer wall of the piston column (2) from overflowing into the gap between the piston column (2) and the inner cavity (8) of the pump body. Although the piston column (2) and the inner cavity (8) of the pump body are tightly matched with each other in the axial hole, there is still a possibility of leakage when there is a medium that is easily permeable, such as oil or gas, so the sealing ring (3) here plays a vital role.

[0025] Similarly, when the gas circuit system is connected, the sealing ring (3) needs to be sealed to prevent the gas in the annular groove (202) on the outer wall of the piston column (2) from leaking into the gap between the piston column (2) and the inner cavity (8) of the pump body. Although the piston column (2) and the inner cavity (8) of the pump body are tightly matched with each other in the axial hole, there is still a possibility of leakage when there is a medium that is easily permeable, such as oil or gas, so the sealing ring (3) here plays an equally important role.

[0026] Compared with the prior art, the beneficial effects of the present invention are embodied in:

[0027] When the oil system and the gas system need to be switched, the prior art requires switching between different devices; however, the present invention can achieve this only through the same device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 It is a cross-sectional view of the upper pump body of the pump body (1) of the present invention.

[0030] Figure 3 It is a cross-sectional view of the lower pump body of the pump body (1) of the present invention.

[0031] Figure 4 This is a route diagram of the oil passage (501) and the gas passage (502) of the present invention.

[0032] Figure 5 This is a schematic structural diagram of the piston column (2) without the sealing ring (3) installed according to the present invention.

[0033] Figure 6 This is a schematic diagram of the position structure of the piston column (2) located at the left end of the inner cavity (8) of the pump body when the oil circuit of the present invention is connected.

[0034] Figure 7 This is a schematic diagram of the position structure of the piston column (2) located at the right end of the inner cavity (8) of the pump body when the gas circuit of the present invention is connected.

[0035] Among them, 1 is the pump body, 2 is the piston rod, 3 is the sealing ring, 4 is the spring, 5 is the sealing plug, 8 is the pump body cavity, P is the oil outlet, N is the oil inlet, 103 is the pump body rear cover, 104 is the pump body front cover, 501 is the oil passage, 502 is the air passage, 202 is the groove, 201 is the sealing ring installation groove DETAILED DESCRIPTION

[0036] An oil circuit reversing device, in which the overall structure and action positions of the relevant components are shown in FIG. Figures 1 to 7 .

[0037] The first and second embodiments of the present invention only describe the two-way passage case of the oil passage and the air passage and the case of two piston columns. The cases of three-way passages or multiple passages such as the oil passage, the air passage and the water passage are no longer described in the embodiments; the cases of one piston column or multiple piston columns are no longer described in the embodiments.

[0038] (1) Example 1:

[0039] An oil circuit reversing device comprises: a pump body (1), a pump body cavity (8) with a hole in the pump body, a piston column (2) that cooperates with the pump body cavity (8) and moves axially in and out in the pump body cavity (8), and a sealing ring (3) sleeved on the piston column (2) and tightly cooperates with the pump body cavity (8); the outer wall of the piston column (2) is provided with T grooves (202) along the circumferential direction, which are coaxial with the piston column (2) and cooperate with the oil circuit passage (501) and the gas circuit passage (502) on the pump body (1); the left and right sides of the grooves (202) are both covered with sealing rings (3), and the oil circuit passage (501) and the gas circuit passage (502) on the pump body (1) are arranged in a staggered manner in the corresponding axial direction of the same piston column (2); in this embodiment, the piston column (2) is circular, the number of piston columns (2) is two, and the shape of the groove (202) on the piston column (2) is an annular groove. See for details. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7 .

[0040] The pump body (1) is provided with an oil inlet (N), an oil outlet (P), and an oil passage (501) communicating with the oil inlet (N) and the oil outlet (P); the pump body (1) is also provided with an air inlet A1A2A3A4, an air outlet B1B2B3B4, and an air passage (502) communicating with the air inlet A1A2A3A4 and the air outlet B1B2B3B4; see for details. Figure 2 、 Figure 4 and Figure 3 .

[0041] In this embodiment, the air path (502) on the pump body is connected to each other by the air inlet and the air outlet; of course, the air path (502) can also adopt a path similar to the oil path (501) in this embodiment: that is, there is only one air inlet and one air outlet, and the remaining air paths are realized by connecting each other through the openings in the pump body (1); they are not listed here.

[0042] The structural order of the outer surface of the piston column (2) is: ┄┄ sealing ring (3) + groove (202) + sealing ring (3) + piston column (2) + sealing ring (3) + groove (202) + sealing ring (3) ┄┄; the number of grooves (202) T ≥ 2, and in this embodiment, the number of grooves (202) T is 4; the number of sealing rings = 2*(T+1) = 2*(4+1) = 10; see for details Figure 5 .

[0043] In this embodiment, the oil circuit system 501 and the gas circuit system 502 are independent systems that can be switched between each other.

[0044] In this embodiment, the piston column (2) is driven by the external force driving device spring (4) to move in and out of the pump body cavity (8). Other driving methods besides the spring (4) can also be used.

[0045] The specific action flow is as follows:

[0046] When port a is not connected, the air inlet a is closed, the spring (4) is in a compressed state in the inner cavity (8) of the pump body, the piston rod (2) is at the right end of the inner cavity (8) of the pump body, the NP of the oil passage (501) is connected, the oil outlet (P) and the oil inlet are in a connected state, the outlets of each passage of the oil passage (501) are firmly sealed with a sealing plug 5, and the oil flows through the only channel from the inlet N to the outlet P. At this time, AB and b of the air passage (502) are not connected; see for details. Figure 2 、 Figure 4 、 Figure 3 and Figure 6 .

[0047] When port a is connected and air inlet a is open, spring 4 is in a relaxed state in the inner cavity (8) of the pump body. At this time, the piston rod (2) is at the left end of the inner cavity (8) of the pump body. A1→B1+b1, A2→B2+b2, A3→B3+b3, and A4→B4+b4 of the air path (502) are all connected. Air inlet A1 is in a connected state with air outlet B1 and air outlet b1. Air inlet A2 is in a connected state with air outlet B2 and air outlet b2. Air inlet A3 is in a connected state with air outlet B3 and air outlet b3. Air inlet A4 is in a connected state with air outlet B4 and air outlet b4. At this time, N and P of the oil path (501) are not connected. See for details. Figure 2 、 Figure 3 、 Figure 4 and Figure 7 .

[0048] In this oil circuit reversing device, the pump body (1) is in a fixed state, and the oil circuit (501) and the gas circuit (502) are driven to circulate and switch only through the left and right in and out movement of the piston rod (2).

[0049] In the present invention, when the oil passage (501) is connected, the sealing ring (3) is already sealed to prevent the oil in the groove (202) on the outer wall of the piston rod (2) from overflowing into the gap between the piston rod (2) and the inner cavity (8) of the pump body. Although the piston rod (2) and the inner cavity (8) of the pump body are tightly matched with each other in the axial hole, there is still a possibility of leakage when there is a medium that is easily permeable such as oil or gas. Therefore, the sealing ring (3) here plays a vital role in sealing and preventing leakage. Of course, when the gas passage (502) is connected, the sealing rings (3) on the left and right sides of the groove (202) still play a vital role in sealing and preventing leakage.

[0050] Preferably, the shape of the groove (202) on the surface of the piston column (2) can be a single groove (202) or a groove (202) formed by multiple continuous grooves. Of course, if a groove (202) formed by multiple continuous grooves is used, the cross-sectional shapes of the corresponding oil passage (501) and gas passage (502) should be designed to match the groove (202) on the piston column (2).

[0051] As a preference, the piston rod (2) and the inner cavity (8) of the pump body adopt an axial hole matching structure. Of course, other closed cavity matching structures can also be adopted.

[0052] Preferably, the cross-sectional shape of the piston column (2) is circular. Of course, the cross-sectional shape of the piston column (2) can also be elliptical, hexagonal, or other uniform regular shapes. In this case, the flow channels of the oil passage (501) and the gas passage (502) need to be changed accordingly to match the cross-sectional shape of the piston column (2).

[0053] Preferably, the number of the piston rod (2) can be one, in which case both the oil passage (501) and the gas passage (502) can be simplified accordingly.

[0054] In this embodiment, the number of piston rods (2) is 2.

[0055] Preferably, the medium flowing in the oil passage (501) and the gas passage (502) can be oil and gas, or other various liquid or gaseous media, and the shape and material of the corresponding sealing ring (3) can be adjusted.

[0056] (2) Example 2:

[0057] The overall structure of the second embodiment remains unchanged from that of the first embodiment, and only the method of use is changed.

[0058] At this time, the oil circuit reversing device can also be used as a quantitative oil distribution device, and the gas circuit passage (502) can be used to dry the surface of the groove (202) on the piston rod (2).

[0059] The specific implementation is as follows: when the piston rod (2) is advanced to make the oil passage (501) connected, the gas passage (502) is blocked, and the sealing ring (3) is used to seal and block the relevant passages, namely the oil passage (501) and the gas passage (502). After the oil passage is delivered to the required amount, the oil passage is blocked. Since oil is no longer needed at this time, the piston rod (2) is advanced to make the gas passage (502) connected, and the oil passage (501) is blocked. At this time, each groove ( 202) all have gas passing through: that is, A1→B1+b1, A2→B2+b2, A3→B3+b3, A4→B4+b4 of the gas path (502) are all connected, the air inlet A1 is in communication with the air outlet B1 and the air outlet b1, the air inlet A2 is in communication with the air outlet B2 and the air outlet b2, the air inlet A3 is in communication with the air outlet B3 and the air outlet b3, and the air inlet A4 is in communication with the air outlet B4 and the air outlet b4. Since there are two piston rods (2), the air outlets of each path here are all set to two. If the number of piston rods (2) is three, then according to Figure 2 and Figure 3 The same principle and rule arrangement is adopted, and here, the air outlets of each passage are also set to 3. After the oil delivery is completed, the air is opened to blow away the residual oil droplets trapped on the groove (202) of the piston rod (2). Since each air passage is opened, the air delivery volume and air delivery pressure of each air passage are the same, so the outer surface of the groove (202) on each piston rod (2) is dried to the same degree, which is more convenient for accurate and precise control of the oil delivery volume when the oil passage is connected next time.

Claims

1. An oil circuit reversing device, comprising a pump body (1), characterized in that: The pump body comprises an inner cavity (8) with an opening in the pump body (1), and M piston rods (2) that move in and out of the inner cavity (8) of the pump body; each of the M piston rods (2) has T grooves (202) on its surface; The pump body (1) includes an oil passage (501) and an air passage (502) that are connected to T grooves (202) on the piston column (2); the oil passage (501) and the air passage (502) in the pump body (1) are arranged in a staggered manner in the corresponding axial direction of the same piston column (2); The grooves (202) on the surface of the piston column (2) are matched and connected with the oil passage (501) and the gas passage (502) on the pump body (1) at corresponding positions when the piston column (2) moves.

2. The oil circuit reversing device according to claim 1, characterized in that: The groove (202) on the surface of the piston column (2) is an annular groove (202) coaxial with the piston column (2) and distributed in the circumferential direction of the cross section of the piston column (2).

3. The oil circuit reversing device according to claim 1, characterized in that: Each groove (202) of each piston column of the M piston columns (2) is provided with a sealing ring (3) for sealing on the left and right sides respectively.

4. The oil circuit reversing device according to claim 1, characterized in that: Each of the M piston rods (2) is provided with a sealing ring (3) at both ends.

5. The oil circuit reversing device according to claim 1, characterized in that: The cross section of the piston column (2) is circular.

6. The oil circuit reversing device according to claim 1, characterized in that: The M≥1, and the T≥2.

7. The oil circuit reversing device according to claim 1, characterized in that: The piston column (2) that moves in and out of the pump body cavity (8) is tightly fitted with the pump body cavity (8) without any gap.

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