Manual combination pump valve block structure convenient to operate

Abstract

The utility model discloses a manual combination pump valve block structure convenient to operate, which comprises a valve seat, a first valve cavity, a second valve cavity, an oil passage a, an oil passage b, a working port A and a working port B are arranged in the valve seat, the first valve cavity is transversely arranged in the valve seat, a manual valve core is arranged in the first valve cavity, and the valve seat is provided with an operating rod a for driving the manual valve core to reciprocate along the first valve cavity. The oil passage a is communicated with the first valve cavity and the second valve cavity, the oil passage b is used for being communicated with the oil passage a and an oil tank, a one-way ball head is arranged in the oil passage a, the second valve cavity is longitudinally formed in the valve seat, a distribution valve element is arranged in the second valve cavity, and an operation part b for driving the distribution valve element to rotate is arranged on one side of the bottom of the valve seat; the oil return channel is used for being communicated with an oil tank, and the oil channel a is switched to be communicated with the working port A or the working port B by rotating the distribution valve element, so that the size of the manual combination pump can be effectively reduced, and meanwhile a user can conveniently control the manual combination pump.

Description

Technical Field

[0001] The utility model relates to a manual combined pump valve block structure which is easy to operate, in particular to a manual combined pump valve block structure which is easy to operate. Background Art

[0002] The driving flashlight combination pump is widely used in the current new energy commercial heavy-duty truck field. The existing driving flashlight combination pump, for example, a cab flip flashlight combination pump assembly disclosed in a Chinese patent (patent publication number CN116538081A), includes a valve seat, an oil tank and a motor pump assembly. The valve seat is provided with a first valve cavity, a second valve cavity, an oil passage a, an oil passage b and an oil passage c. The first valve cavity is provided with a manual valve core, and the valve seat is provided with an operating rod a. The second valve cavity is provided with a distribution valve core, and the valve seat is provided with an operating rod b. The oil passage a The first valve chamber and the second valve chamber are connected, the oil channel b is connected to the oil channel a and the oil tank, the oil channel a is provided with a one-way ball that separates the oil channel a and the oil channel b, the valve seat is provided with an oil channel d that connects the oil tank and the motor pump assembly, the distribution valve core includes a distribution valve core, the distribution valve core is provided with a central cavity and an outer ring groove, the return oil channel and the oil tank are connected through the oil channel c, the valve seat is provided with a working port A and a working port B, the distribution valve core is provided with a channel port, the distribution valve core is provided with a one-way valve structure that prevents the hydraulic oil in the central cavity from flowing back to the oil channel a, and the valve seat is provided with an overflow port.

[0003] However, since the manual valve core and the operating rod a for controlling the distribution valve core and the operating rod b for controlling the distribution valve core are arranged on both sides of the valve seat, specifically, the operating rod a is arranged at the bottom of the valve seat (that is, the valve seat is equivalent to the other side of the oil tank), and the operating rod b is arranged at the side end of the valve seat, the flashlight combination pump assembly occupies a large space. On the other hand, since the space for placing the flashlight combination pump assembly is originally relatively small, it is inconvenient for the user to operate the operating rod b, and therefore it needs to be improved. Summary of the invention

[0004] The utility model aims to provide a manual combination pump valve block structure that is easy to operate. By designing the setting position of the distribution valve core, the volume of the manual combination pump can be effectively reduced, and it is convenient for users to operate it.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: a manual combination pump valve block structure that is easy to operate, including a valve seat, a first valve cavity, a second valve cavity, an oil channel a, an oil channel b, a working port A and a working port B are arranged in the valve seat, the first valve cavity is transversely arranged in the valve seat, a manual valve core is arranged in the first valve cavity, an operating rod a for driving the manual valve core to reciprocate along the first valve cavity is arranged at the bottom of the valve seat, the oil channel a connects the first valve cavity and the second valve cavity, the oil channel b is used to connect the oil channel a and the oil tank, a one-way ball head is arranged in the oil channel a, the second valve cavity is longitudinally arranged in the valve seat, a distribution valve core is arranged in the second valve cavity, the outer end of the distribution valve core extends out of the bottom of the valve seat, an operating part b for driving the distribution valve core to rotate is arranged on one side of the bottom of the valve seat, a connecting port and an oil return channel are arranged at the same depth position of the distribution valve core, the three connecting ports are connected to each other, the oil return channel is isolated from the connecting port, the oil return channel is used to connect the oil tank, and the oil channel a is switched to connect to the working port A or the working port B by rotating the distribution valve core.

[0006] Furthermore, a limiting cutout is provided at the position where the distribution valve core extends out of the bottom of the valve seat, and a limiting block is detachably connected to the bottom of the valve seat, and the limiting block cooperates with the limiting cutout to limit the depth of the distribution valve core inserted into the second valve cavity.

[0007] Furthermore, the three connecting ports and the channel openings of the oil return channel are arranged at equal angles around the distribution valve core. When the distribution valve core is switched to the position where the oil channel a connects to the working port A, the working port B connects to the oil return channel. When the distribution valve core is switched to the position where the oil channel a connects to the working port B, the working port A connects to the oil return channel.

[0008] Furthermore, a sealing member is provided at the communication port of the distribution valve core, the sealing member abuts against the cavity wall of the second valve cavity, and a through groove is provided at the center of the sealing member.

[0009] Furthermore, an oil channel c is provided in the valve seat, one end of the oil channel c passes through the valve seat corresponding to the position where the oil tank is installed, and the other end of the oil channel c passes through the valve seat corresponding to the position where the motor pump assembly is installed.

[0010] Furthermore, an oil passage d is provided at a position of the valve seat corresponding to the motor pump assembly, and the oil passage d is connected to the pressure chamber of the motor pump assembly and the oil passage a.

[0011] Furthermore, an overflow hole is provided in the valve seat, one end of the overflow hole is connected to the oil tank, and the other end of the overflow hole is connected to the first valve chamber. A central channel connecting the overflow hole and the oil channel a is provided in the manual valve core, and the central channel is communicated with the overflow hole. A first one-way valve assembly for sealing the overflow hole and the oil channel a is provided in the central channel.

[0012] Furthermore, the first valve chamber is provided with two groups and is located on both sides of the second valve chamber, the oil passage b is provided with two groups, the oil passage a is used to connect the oil passage b on both sides and the corresponding first valve chamber, and manual valve cores are respectively provided in the first valve chambers.

[0013] Furthermore, the inner end of the operating rod a is connected to a driving block, and linkage rods are respectively provided on both sides of the driving block. Limiting grooves are respectively provided on both sides of the valve seat in an arc shape with the operating rod a as the center. The limiting grooves are connected to the first valve cavity, and the linkage rods extend into the limiting grooves and are linked with the manual valve core, so that when the operating rod a rotates, the manual valve cores on both sides can be driven to slide back and forth along the corresponding first valve cavity through the driving block.

[0014] Furthermore, the distribution valve core is provided with first limit surfaces on both sides corresponding to the limit cutout, and the limit block is provided with a second limit surface at the position corresponding to the first limit surface, and the rotation angle of the distribution valve core is limited by the cooperation of the first limit surface and the second limit surface.

[0015] In summary, the utility model has the following beneficial effects:

[0016] The manual combination pump valve block structure of the utility model can effectively reduce the volume of the manual combination pump and facilitate the user to operate it by arranging the operating rod a of the manual valve core and the operating rod b of the distribution valve core on one side of the bottom end surface of the valve seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the internal oil circuit of the valve seat of the utility model.

[0019] Figure 3 It is an enlarged view of point A of the present utility model.

[0020] Figure 4 It is an enlarged view of B of the utility model.

[0021] Figure 5 It is a schematic diagram of the limiting block and the limiting cutout of the utility model.

[0022] Figure 6 It is a structural schematic diagram of the driving block of the utility model.

[0023] Figure 7 It is a schematic diagram of the first limiting surface and the second limiting surface of the utility model.

[0024] Figure 8 It is a structural schematic diagram of the limiting incision of the utility model.

[0025] In the figure: 10, valve seat; 11, first valve chamber; 12, second valve chamber; 13, oil channel a; 131, one-way ball head; 132, second one-way valve assembly; 14, oil channel b; 15, working port A; 16, working port B; 17, oil channel c; 18, oil channel d; 19, overflow hole; 20, manual valve core; 21, center channel; 22, first one-way valve assembly; 30, operating rod a; 31, drive block; 32, linkage rod; 33, limit groove; 40, distribution valve core; 41, connecting port; 42, return oil channel; 43, limit cut; 44, sealing element; 45, first limit surface; 50, operating part b; 60, limit block; 61, second limit surface; 70, oil tank; 80, motor pump assembly. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] like Figure 1-8 As shown, a manual combined pump valve block structure that is easy to operate includes a valve seat 10, in which a first valve cavity 11, a second valve cavity 12, an oil passage a13, an oil passage b14, a working port A15 and a working port B16 are arranged. The first valve cavity 11 is transversely arranged in the valve seat 10, a manual valve core 20 is arranged in the first valve cavity 11, and an operating rod a30 that drives the manual valve core 20 to reciprocate along the first valve cavity 11 is arranged at the bottom of the valve seat 10. The oil passage a13 connects the first valve cavity 11 and the second valve cavity 12, and the oil passage b14 is used to connect the oil passage a13 and the oil tank 70. A one-way ball head 131 is provided in the oil passage a13, and the second valve chamber 12 is longitudinally arranged in the valve seat 10. A distribution valve core 40 is provided in the second valve chamber 12. The outer end of the distribution valve core 40 extends out of the bottom of the valve seat 10, and an operating part b50 for driving the distribution valve core 40 to rotate is provided on one side of the bottom of the valve seat 10. The operating part b50 can be integrally formed on the distribution valve core 40, for example, an external hexagonal structure formed on the outside of the distribution valve core 40. Preferably, the operating part b50 is a rotating pin inserted into the outer end of the distribution valve core 40, and the distribution valve core 40 is driven to rotate by the rotating pin.

[0028] The distribution valve core 40 is provided with a connecting port 41 and an oil return channel 42 at the same depth position, the three connecting ports 41 are connected to each other, and the oil return channel 42 is isolated from the connecting port 41. The oil return channel 42 is used to connect to the oil tank 70, and the distribution valve core 40 is rotated to switch the oil channel a13 to connect to the working port A15 or the working port B16. Furthermore, the channel openings of the three connecting ports 41 and the oil return channel 42 are arranged at equal angles around the distribution valve core 40. When the distribution valve core 40 is switched to the position where the oil channel a13 connects to the working port A15, the working port B16 connects to the oil return channel 42. When the distribution valve core 40 is switched to the position where the oil channel a13 connects to the working port B16, the working port A15 connects to the oil return channel 42.

[0029] A limit cutout 43 is provided at the position where the distribution valve core 40 extends out of the bottom of the valve seat 10. The bottom of the valve seat 10 is detachably connected to a limit block 60. The limit block 60 and the limit cutout 43 are limited in cooperation with each other to limit the depth of the distribution valve core 40 inserted into the second valve cavity 12. The limit block 60 is detachably fixed to the valve seat 10 by fasteners.

[0030] The distribution valve core 40 is respectively provided with a first limiting surface 45 on both sides corresponding to the limiting cutout 43, and the limiting block 60 is provided with a second limiting surface 61 at the position corresponding to the first limiting surface 45, and the rotation angle of the distribution valve core 40 is limited by the cooperation of the first limiting surface 45 and the second limiting surface 61. Specifically, the limiting cutout 43 is a U-shaped groove, and the U-shaped groove includes a semicircular groove and a strip groove located on both sides of the semicircular groove, wherein the inner end surface of the strip groove is the first limiting surface 45, and the first limiting surface 45 and the second limiting surface 61 are respectively provided with two groups, and each group of the first limiting surface 45 and the second limiting surface 61 corresponds one to one. The rotation stroke of the distribution valve core 40 in the present invention is 180°, that is, 90° in the forward rotation and 90° in the reverse rotation.

[0031] A seal 44 is provided at the communication port 41 of the distribution valve core 40 , and the seal 44 abuts against the cavity wall of the second valve cavity 12 . A through groove is provided at the center of the seal 44 . Specifically, a gap is left between the distribution valve core 40 and the second valve cavity 12 , and the seal 44 is used to block the communication port 41 and the oil return channel 42 .

[0032] An oil passage c17 is provided in the valve seat 10 , one end of the oil passage c17 passes through the valve seat 10 corresponding to the position where the oil tank 70 is installed, and the other end of the oil passage c17 passes through the valve seat 10 corresponding to the position where the motor pump assembly 80 is installed.

[0033] An oil passage d18 is provided at the position of the valve seat 10 corresponding to the motor pump assembly 80. The oil passage d18 connects the pressure chamber of the motor pump assembly 80 and the oil passage a13. When the motor pump assembly 80 is working, the pressure chamber of the motor pump assembly 80 and the oil passage a13 will generate negative pressure, so that the oil in the oil tank 70 passes through the oil passage b14 and pushes open the one-way ball head 131 to flow to the oil passage a13, thereby achieving the purpose of electric oiling.

[0034] An overflow hole 19 is provided in the valve seat 10, one end of the overflow hole 19 is connected to the oil tank 70, and the other end of the overflow hole 19 is connected to the first valve chamber 11. A central channel 21 connecting the overflow hole 19 and the oil channel a13 is provided in the manual valve core 20, and the central channel 21 is communicated with the overflow hole 19. A first one-way valve assembly 22 for blocking the overflow hole 19 and the oil channel a13 is provided in the central channel 21. The setting of the overflow hole 19 can play a protective role and solve the problem of excessive oil pressure in the oil channel a13 affecting the normal operation of the manual combination pump. The first one-way valve assembly 22 includes a first plug, a first elastic member and a first ball. The first elastic member is abutted between the first plug and the first ball. A valve port is provided on one side of the central channel 21 adjacent to the oil channel a13, and the first ball is abutted at the valve port.

[0035] The first valve chamber 11 is provided with two groups and is separated on both sides of the second valve chamber 12, the oil passage b14 is provided with two groups, the oil passage a13 is used to connect the oil passage b14 on both sides and the corresponding first valve chamber 11, and the first valve chamber 11 is respectively provided with a manual valve core 20. By setting two groups of manual valve cores 20, when the user operates the operating lever a30 once, the displacement of the manual combination pump of the utility model is increased to twice the original, thereby effectively providing user operation convenience.

[0036] The inner end of the operating rod a30 is connected to a driving block 31, and linkage rods 32 are respectively provided on both sides of the driving block 31. Limiting grooves 33 are respectively provided on both sides of the valve seat 10 in an arc shape with the operating rod a30 as the center. The limiting grooves 33 are connected to the first valve chamber 11, and the linkage rods 32 extend into the limiting grooves 33 and are linked with the manual valve core 20, so that when the operating rod a30 rotates, the manual valve cores 20 on both sides can be driven to slide back and forth along the corresponding first valve chamber 11 through the driving block 31.

[0037] The oil channel a13 includes two groups of first flow channels and a second flow channel connecting the two first flow channels. The first flow channel is connected to the second valve chamber 12 through the second flow channel. A second one-way valve assembly 132 is provided in the second flow channel. The second one-way valve assembly 132 includes two second ball heads, a second spring and a second plug. A step portion is provided on the second flow channel. Two ball heads are respectively provided at both ends of the second spring, one of the ball heads is abutted against the step portion, and the other ball head is abutted against the second plug. The second plug is threadedly installed in the second flow channel, and a connecting cavity connecting the second flow channel and the first flow channel is provided inside the second plug.

[0038] In summary, the utility model has the following beneficial effects:

[0039] The manual combination pump valve block structure of the utility model can effectively reduce the volume of the manual combination pump by arranging the operating rod a30 of the manual valve core 20 and the operating rod b of the distribution valve core 40 on one side of the bottom end surface of the valve seat 10, while facilitating the user to operate it.

[0040] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A manual combination pump valve block structure that is easy to operate, comprising a valve seat (10), wherein the valve seat (10) is provided with a first valve chamber (11), a second valve chamber (12), an oil passage a (13), an oil passage b (14), a working port A (15) and a working port B (16), wherein the first valve chamber (11) is transversely arranged in the valve seat (10), a manual valve core (20) is provided in the first valve chamber (11), an operating rod a (30) is provided at the bottom of the valve seat (10) for driving the manual valve core (20) to reciprocate along the first valve chamber (11), the oil passage a (13) is connected to the first valve chamber (11) and the second valve chamber (12), the oil passage b (14) is used to connect the oil passage a (13) and the oil tank (70), and a one-way ball head (131) is provided in the oil passage a (13), characterized in that: The second valve cavity (12) is longitudinally arranged in the valve seat (10), and a distribution valve core (40) is arranged in the second valve cavity (12). The outer end of the distribution valve core (40) extends out of the bottom of the valve seat (10), and an operating part b (50) for driving the distribution valve core (40) to rotate is arranged on one side of the bottom of the valve seat (10). The distribution valve core (40) is provided with a connecting port (41) and an oil return channel (42) at the same depth position, and the three connecting ports (41) are connected to each other. The oil return channel (42) is isolated from the connecting port (41). The oil return channel (42) is used to connect to the oil tank (70), and the distribution valve core (40) is rotated to switch the oil channel a (13) to connect to the working port A (15) or the working port B (16).

2. The easy-to-operate manual combination pump valve block structure according to claim 1, characterized in that: A limiting cutout (43) is provided at the position where the distribution valve core (40) extends out of the bottom of the valve seat (10); the bottom of the valve seat (10) is detachably connected to a limiting block (60); and the limiting block (60) and the limiting cutout (43) cooperate to limit the depth of the distribution valve core (40) inserted into the second valve cavity (12).

3. The easy-to-operate manual combination pump valve block structure according to claim 1, characterized in that: The three communication ports (41) and the channel ports of the oil return channel (42) are arranged at equal angles around the distribution valve core (40); when the distribution valve core (40) is switched to a position where the oil channel a (13) is connected to the working port A (15), the working port B (16) is connected to the oil return channel (42); and when the distribution valve core (40) is switched to a position where the oil channel a (13) is connected to the working port B (16), the working port A (15) is connected to the oil return channel (42).

4. The easy-to-operate manual combination pump valve block structure according to claim 1, characterized in that: A sealing member (44) is provided at the communication port (41) of the distribution valve core (40), the sealing member (44) abuts against the cavity wall of the second valve cavity (12), and a through groove is provided at the center of the sealing member (44).

5. The easy-to-operate manual combination pump valve block structure according to claim 1, characterized in that: An oil passage c (17) is provided in the valve seat (10), one end of the oil passage c (17) passes through the valve seat (10) corresponding to a position where an oil tank (70) is installed, and the other end of the oil passage c (17) passes through the valve seat (10) corresponding to a position where a motor pump assembly (80) is installed.

6. The easy-to-operate manual combination pump valve block structure according to claim 1, characterized in that: An oil passage d (18) is provided at a position of the valve seat (10) corresponding to the motor pump assembly (80), and the oil passage d (18) is connected to the pressure chamber of the motor pump assembly (80) and the oil passage a (13).

7. A convenient-to-operate manual combination pump valve block structure according to any one of claims 1 to 6, characterized in that: The valve seat (10) is provided with an overflow hole (19), one end of the overflow hole (19) is connected to the oil tank (70), and the other end of the overflow hole (19) is connected to the first valve chamber (11). The manual valve core (20) is provided with a central channel (21) connected to the overflow hole (19) and the oil passage a (13). The central channel (21) is in communication with the overflow hole (19), and a first one-way valve assembly (22) for blocking the overflow hole (19) and the oil passage a (13) is provided in the central channel (21).

8. The easy-to-operate manual combination pump valve block structure according to claim 7, characterized in that: The first valve chamber (11) is provided with two groups and is located on both sides of the second valve chamber (12); the oil passage b (14) is provided with two groups; the oil passage a (13) is used to connect the oil passage b (14) on both sides with the corresponding first valve chamber (11); and the first valve chamber (11) is provided with a manual valve core (20) respectively.

9. The easy-to-operate manual combination pump valve block structure according to claim 8, characterized in that: The inner end of the operating rod a (30) is connected to a driving block (31), and linkage rods (32) are respectively provided on both sides of the driving block (31). The valve seat (10) is respectively provided with limiting grooves (33) arranged in an arc shape with the operating rod a (30) as the center, and the limiting grooves (33) are connected to the first valve cavity (11). The linkage rod (32) extends into the limiting groove (33) and is arranged in linkage with the manual valve core (20), so that when the operating rod a (30) rotates, it can drive the manual valve cores (20) on both sides to slide back and forth along the corresponding first valve cavity (11) through the driving block (31).

10. The easy-to-operate manual combination pump valve block structure according to claim 2, characterized in that: The distribution valve core (40) is provided with first limit surfaces (45) on both sides corresponding to the limit cutout (43), and the limit block (60) is provided with a second limit surface (61) at a position corresponding to the first limit surface (45). The first limit surface (45) and the second limit surface (61) cooperate to limit the rotation angle of the distribution valve core (40).

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