Detachable valve sleeve of cartridge valve

Abstract

The utility model relates to the technical field of hydraulic systems, in particular to a detachable valve sleeve of a cartridge valve. The detachable valve sleeve of the cartridge valve comprises a valve sleeve body, a threaded pipe, a positioning block, a detection block and an identification block, the left end of the valve sleeve body is connected with the threaded pipe, the threaded pipe is used for being in threaded connection with a valve body, the right side of the valve sleeve body is rotatably connected with the positioning block, notches are symmetrically formed in the positioning block up and down, and the detection block is used for detecting the valve body. The notches are slidably connected with detection blocks, and the right sides of the detection blocks are connected with identification blocks penetrating through the positioning blocks. Through the design of the detection block and the identification block, when the valve sleeve body is installed, an operator can directly observe the position state of the identification block to accurately judge whether the valve sleeve body is correctly installed in place or not, the problem that installation is not in place or excessive installation is caused by insufficient experience is avoided, the installation error rate is effectively reduced, and the installation efficiency is improved. And the sealing performance and the stability of the hydraulic system are improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic system technology, and in particular to a detachable valve sleeve for a cartridge valve. Background Technology

[0002] In modern industrial hydraulic systems, cartridge valves are widely used in injection molding machines, cranes, and metallurgical equipment due to their compact structure, large flow capacity, and excellent sealing performance. As a key component of cartridge valves, the ease and accuracy of valve sleeve installation and removal are crucial to the performance and maintenance costs of the hydraulic system.

[0003] Traditional cartridge valve installation faces two major challenges: First, the lack of effective positioning aids makes installation and positioning difficult. The valve sleeve is typically connected to the valve body via a threaded fit or direct insertion, making it difficult to ensure precise positioning. This affects the fit accuracy between the valve core and the valve sleeve, thus interfering with hydraulic oil flow control and reducing system efficiency and stability. Especially under high-precision flow control requirements, inaccurate valve sleeve positioning can lead to unstable actuator operation.

[0004] Secondly, the existing valve sleeve installation process lacks intuitive indicators to confirm the installation status, forcing operators to rely heavily on experience, which can easily lead to improper or excessive installation. Improper installation can cause poor sealing and hydraulic oil leakage, resulting in resource waste and environmental pollution; excessive installation may cause valve sleeve deformation or damage, increasing maintenance costs and downtime. Utility Model Content

[0005] To overcome the aforementioned drawbacks, the technical problem is to provide a removable valve sleeve for a cartridge valve.

[0006] The technical solution of this utility model is: a detachable valve sleeve for a cartridge valve, comprising a valve sleeve body, a threaded tube, a positioning block, a detection block, and an identification block. The left end of the valve sleeve body is connected to a threaded tube for threaded connection with the valve body. The right side of the valve sleeve body is rotatably connected to a positioning block. The positioning block has symmetrical slots at the top and bottom, and a detection block is slidably connected to each slot. An identification block that penetrates the positioning block is connected to the right side of each detection block.

[0007] Furthermore, it also includes sponge filling blocks, with two sponge filling blocks embedded in the slot at the gap between the detection block and the positioning block.

[0008] Furthermore, mounting slots for installing screws are provided on both the upper and lower sides of the positioning block.

[0009] Furthermore, it also includes retaining balls and return springs. At the connection between the positioning block and the valve sleeve body, four sliding retaining balls are equally spaced along the circumference. Each retaining ball is connected to the inside of the positioning block with a return spring. At the corresponding position on the outer wall of the valve sleeve body, four slots are equally spaced along the circumference, and the retaining balls and slots form a snap-fit ​​engagement.

[0010] Furthermore, it also includes a diamond-shaped block, with a diamond-shaped block connected to the right end of the valve sleeve body.

[0011] Furthermore, the left side of the detection block has a wear-resistant coating at the end that contacts the valve block, and the wear-resistant coating material is tungsten carbide.

[0012] The beneficial effects of this utility model are as follows: 1. The design of the detection block and the marking block allows the operator to directly observe the position and status of the marking block when installing the valve sleeve body, so as to accurately judge whether the valve sleeve body is correctly installed. This avoids problems of improper installation or over-installation due to lack of experience, effectively reduces the installation error rate, and improves the sealing and stability of the hydraulic system.

[0013] 2. A positioning block is connected to the right end of the valve sleeve body. The screw passes through the mounting groove on the positioning block and connects to the pre-set screw hole on the valve body. This can position and reinforce the valve sleeve body, ensuring the accuracy of the valve sleeve body installation position and enhancing the fitting accuracy between the valve core and the valve sleeve. This ensures the accuracy of hydraulic oil flow control and the working efficiency of the system. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the positioning block, mounting groove, and rhomboid block components of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of this utility model from a side view.

[0017] Figure 4 This is a first partial sectional view of the present invention.

[0018] Figure 5 This is a second partial sectional view of the present invention.

[0019] Figure 6 This is a schematic diagram of the planar structure of the detection block and marking block components of this utility model.

[0020] In the attached drawings, the following are the reference numerals: 1_valve sleeve body, 2_threaded pipe, 3_positioning block, 31_mounting groove, 4_diamond block, 5_locking ball, 6_reset spring, 7_slot, 8_groove, 9_detection block, 10_marking block, 11_sponge filling block. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example: A removable valve sleeve for a cartridge valve, such as Figures 1-6 As shown, the device includes a valve sleeve body 1, a threaded tube 2, a positioning block 3, a detection block 9, an identification block 10, and a sponge filling block 11. The left end of the valve sleeve body 1 is connected to the threaded tube 2, which is used to connect to the valve body for a secure assembly. The right side of the valve sleeve body 1 is rotatably connected to the positioning block 3. The positioning block 3 has mounting grooves 31 on both the upper and lower sides for mounting screws. The screws are matched with the screw holes pre-set on the valve body to achieve positioning and secondary reinforcement of the valve sleeve body 1. The positioning block 3 has symmetrical slots 8 on the upper and lower sides. The detection blocks 9 are slidably connected to the slots 8 for contacting the valve block. The right side of the detection blocks 9 is connected to an identification block 10 that penetrates the positioning block 3. Two sponge filling blocks 11 are embedded in the slots 8 in the gap between the detection blocks 9 and the positioning blocks 3. The left side of the detection block 9 has a wear-resistant coating on the end that contacts the valve block. The wear-resistant coating material is tungsten carbide to extend the service life of the detection block 9.

[0023] like Figures 4-5 As shown, it also includes a retaining bead 5 and a return spring 6. At the connection between the positioning block 3 and the valve sleeve body 1, four sliding retaining beads 5 are equally spaced along the circumferential direction. Each retaining bead 5 is connected to the interior of the positioning block 3 by a return spring 6. At the corresponding position on the outer wall of the valve sleeve body 1, four slots 7 are equally spaced along the circumferential direction. The retaining beads 5 and the slots 7 form a snap-fit ​​engagement, thereby achieving precise positioning of the positioning block 3.

[0024] like Figures 1-3 As shown, it also includes a rhombus block 4. The right end of the valve sleeve body 1 is welded with a rhombus block 4. When the valve sleeve body 1 is screwed into the through hole of the valve body, the rhombus block 4 can be clamped by a wrench or other tools, and the torque of the tool can be used to achieve quick installation of the valve sleeve body 1.

[0025] When installing the valve sleeve body 1 onto the valve block of the hydraulic system, first align the valve sleeve body 1 with the specific mounting hole inside the valve block, then insert the valve sleeve body 1 into the hole. By manually or with the aid of tools, tighten the valve sleeve body 1 to engage the threaded tube 2 with the threaded inner wall of the hole, achieving initial fixation. During the movement of the valve sleeve body 1 as it is screwed in, the detection block 9 comes into contact with the outer wall of the valve block. As the valve sleeve body 1 continues to go deeper, the detection block 9 is subjected to the squeezing force of the inner wall of the valve block, overcoming the elasticity of the sponge filling block 11 and sliding to the right. At the same time, it drives the marker block 10 to move to the right synchronously. During this process, the sponge filling block 11 is compressed and deformed. When the marker block 10 penetrates through the positioning block 3, it indicates that the valve sleeve body 1 has been installed in the predetermined position. At this point, the operator uses screws to pass through the mounting groove 31 on the positioning block 3 and tighten them into the pre-set screw holes on the valve body. This provides secondary reinforcement to the valve sleeve body 1 through the positioning block 3, completing the entire installation process. When it is necessary to disassemble the valve sleeve body 1, first unscrew the screws used for reinforcement to release the constraint of the positioning block 3 on the valve sleeve body 1. Then, twist the valve sleeve body 1 in the opposite direction to detach it from the valve body. When the detection block 9 is no longer subjected to the squeezing force of the outer wall of the valve block, the previously compressed sponge filling block 11 rebounds due to elastic recovery, squeezing the detection block 9 to slide to the left. The detection block 9 drives the marker block 10 to move to the left synchronously until the marker block 10 is completely retracted into the positioning block 3, realizing the reset of the detection component and preparing for the next installation. Throughout the process, the retaining ball 5 and the return spring 6 maintain the relative positioning relationship between the positioning block 3 and the valve sleeve body 1, ensuring the positional accuracy and stability of each component during installation and disassembly.

[0026] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A removable valve sleeve for a cartridge valve, characterized in that: It includes a valve sleeve body (1), a threaded pipe (2), a positioning block (3), a detection block (9), and a marking block (10). The left end of the valve sleeve body (1) is connected to the threaded pipe (2), which is used to make a threaded connection with the valve body. The right side of the valve sleeve body (1) is rotatably connected to the positioning block (3). The positioning block (3) has symmetrical slots (8) in the upper and lower parts. The detection block (9) is slidably connected at each slot (8). The right side of the detection block (9) is connected to a marking block (10) that penetrates the positioning block (3).

2. The removable valve sleeve of a cartridge valve as described in claim 1, characterized in that: It also includes a sponge filling block (11), in which two sponge filling blocks (11) are embedded in the slot (8) at the gap between the detection block (9) and the positioning block (3).

3. The removable valve sleeve of a cartridge valve as described in claim 2, characterized in that: The positioning block (3) has mounting slots (31) on both the upper and lower sides for installing screws.

4. The removable valve sleeve of a cartridge valve as described in claim 3, characterized in that: It also includes a retaining ball (5) and a return spring (6). At the connection between the positioning block (3) and the valve sleeve body (1), four sliding retaining balls (5) are equally spaced along the circumferential direction. Each retaining ball (5) is connected to the interior of the positioning block (3) by a return spring (6). At the corresponding position on the outer side wall of the valve sleeve body (1), four slots (7) are equally spaced along the circumferential direction. The retaining balls (5) and the slots (7) form a snap-fit ​​engagement.

5. A removable valve sleeve for a cartridge valve as described in claim 4, characterized in that: It also includes a rhombus block (4), and the right end of the valve sleeve body (1) is connected to the rhombus block (4).

6. The removable valve sleeve of a cartridge valve as described in claim 5, characterized in that: The left side of the detection block (9) has a wear-resistant coating at the end that contacts the valve block. The wear-resistant coating material is tungsten carbide.

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